* book update

* Removing non-free book

* Add link to WebGL Insights book

* delint - spaces and trailing slash

add sqlite fiddle in SQL

the site has moved to stats.biopapyrus.jp.
the documents for R has merged into one page.

* remove 2 ebook of [Linkers and Loaders], [Learn Python The Hard Way]. ref issue:#3091, #3062

* Fix Issue: #2993, Add book The Black Art of Programming.

* fix author name

remove 2 ebook of [Linkers and Loaders], [Learn Python The Hard Way]. ref issue:#3091, #3062 (#3104)

* Add Ruby Tutorial For Beginners

Hi,
This adds a new free Ruby tutorial (HTML version), **optionally** visitors can download a PDF version of the book by entering an email address.

## What does this PR do?

Add Resource

### Description

Free Ruby tutorial / book for beginners in HTML format with multiple lessons, including installing Ruby, conditionals, loops & object-oriented programming.

### Why is this valuable

It's a complete Ruby tutorial for beginners that helps learn Ruby from scratch. Includes examples, clear explanations & exercises.

### How do we know it's really free?

I made it.

### For book lists, is it a book?

Yes.

### Checklist:

- [x] Not a duplicate
- [x] Included author(s) if appropriate
- [x] Lists are in alphabetical order
- [x] Needed indications added (PDF, access notes, under construction)

* Use Full Book Name

* Add Python screencasts

* Update free-podcasts-screencasts-pt_BR.md

* add CSS Animation 101 ebook

https://github.com/cssanimation/css-animation-101

* Update free-programming-books.md

* add Creative Scala - Greek translation

* line brake

* Added OCaml playground

* delint

Pattern Recognition and Machine Learning Book Added from Microsoft

* Added  Edx Machine Learning course by Microsoft

* Added Edx Machine Learning course by Microsoft

* Update free-courses-en.md

* Update free-courses-en.md

* delint

* Add PHP screencasts

* Correct the number of blank spaces

* Update free-podcasts-screencasts-pt_BR.md

* Alphabetical ordering

I didn't know all this rules to edit a file, my bad.

Update license warpping length to conventional 80 characters for hiding the horizontal scroll bar. (#3088)

* Add Excel-vba Ebook repo.

* Add VBA Eboob Repo. and fix incorrect menu link.

* fix Wrong format line

* Fix incorrect markdown syntax.

* Refactor DB and Javascript menu ZH version md file.

Move 'MySQL, NoSQL, PostgreSQL' under menu: Language Agnostic(语言相关),

Delete a book link of [Google JSON 风格指南], it's a multiple repo. with [JSON 风格指南], 2 link is point to the same one page.

* Delete multiple ebook link

D1. [Redis 设计与实现](http://redisbook.com), wiich is the same as menu: NoSQL -> [Redis 设计与实现](http://redisbook.com)

D2. [The Little MongoDB Book 中文版](https://github.com/justinyhuang/the-little-mongodb-book-cn) wiich is the same as menu: NoSQL -> [The Little MongoDB Book](https://github.com/justinyhuang/the-little-mongodb-book-cn/blob/master/mongodb.md)

* Update comments description.

* remove multiple ebook link

* Fix machine chek issue(fix mistake link location of PostgreSQL)

* FIX machine checking [Do not use headings with similar content (544:1)]

* Fix machine checking [359:1-361:78  warning  Alphabetical ordering: swap l.361 and l.360  alphabetize-lists]

* Update license warpping length to 80 characters.

I removed the link "http://www.vedovelli.com.br/screencasts/" because is not working

* Update free-programming-books-es.md

Add Piensa en Perl 6 (Spanish translation of Think Perl 6)

* Update free-programming-books.md

Add another Perl 6 book. Nowadays Perl 6 is also known as Raku (https://marketing.perl6.org/id/1541379592/pdf_digital) and the name Rakudo refers to the only major Perl 6 compiler at the moment. Also update status of 'Using Perl 6'.

* Update free-programming-books.md

Alphabetize list

* add space to satisfy linter

* Update free-programming-books-es.md

* Adding Cuda PDFs

* putting alphabetically order

* removed extra space

Always check the output of the linter!

* Add Excel-vba Ebook repo.

* Add VBA Eboob Repo. and fix incorrect menu link.

* fix Wrong format line

* Fix incorrect markdown syntax.

* Refactor DB and Javascript menu ZH version md file.

Move 'MySQL, NoSQL, PostgreSQL' under menu: Language Agnostic(语言相关),

Delete a book link of [Google JSON 风格指南], it's a multiple repo. with [JSON 风格指南], 2 link is point to the same one page.

* Delete multiple ebook link

D1. [Redis 设计与实现](http://redisbook.com), wiich is the same as menu: NoSQL -> [Redis 设计与实现](http://redisbook.com)

D2. [The Little MongoDB Book 中文版](https://github.com/justinyhuang/the-little-mongodb-book-cn) wiich is the same as menu: NoSQL -> [The Little MongoDB Book](https://github.com/justinyhuang/the-little-mongodb-book-cn/blob/master/mongodb.md)

* Update comments description.

* remove multiple ebook link

* Fix machine chek issue(fix mistake link location of PostgreSQL)

* FIX machine checking [Do not use headings with similar content (544:1)]

* Fix machine checking [359:1-361:78  warning  Alphabetical ordering: swap l.361 and l.360  alphabetize-lists]

* Update free-programming-books-zh.md

fixed  [nutz](https://github.com/EbookFoundation/free-programming-books/issues/2529)

* Update free-programming-books-zh.md

Modify sort ,  [nutz](https://github.com/EbookFoundation/free-programming-books/issues/2529)

* Update free-programming-books-zh.md

Modify sort

* Add Excel-vba Ebook repo.

* Add VBA Eboob Repo. and fix incorrect menu link.

* fix Wrong format line

* Fix incorrect markdown syntax.

* Add Excel-vba Ebook repo.

* Add VBA Eboob Repo. and fix incorrect menu link.

* fix Wrong format line

* Add "Programming Language Foundations in Agda"

New book out from Philip Wadler and Wen Kokke.

Site: https://plfa.github.io
Repo: https://github.com/plfa/plfa.github.io

* Add authors' names

* remove trailing slash, add full names

* Link directly to O'Really PDFs

O'Reilly has been changing up some of these links, redirecting you to a rather scarce hub.
But they are still hosting the files.

This change is justified by the file still being publicly hosted.

* Fix annotation for linter

* I guess the linter wants PDF capitalized

* Add Computer Networks: A Systems Approach

* Add authors

* Fix format

* issue #3011 Java, Java, Java Object-Oriented Problem Solving by R. Morelli and R.Walde

* issue #3011 Java, Java, Java Object-Oriented Problem Solving by R. Morelli and R.Walde

* issue #3011 Java, Java, Java Object-Oriented Problem Solving by R. Morelli and R.Walde

* issue #3011 Java, Java, Java Object-Oriented Problem Solving by R. Morelli and R.Walde

* Revert 3021 master (#3025)

* Revert "remove dead link from free-programming-books-tr.md (#3024)"

This reverts commit 0f07297a.

* Revert "Added Git and Github course (#3023)"

This reverts commit 3e9e1ded.

* Revert "Added resources (#3022)"

This reverts commit 500db345.

* Revert "issue #3011 Java, Java, Java Object-Oriented Problem Solving by R. Morelli and R.Walde (#3021)"

This reverts commit 27982680.

* remove space, readd javajavajava

* issues:add in list #3009,#3010, correction blank in #3011

added:
Object-oriented Programming in JavaTM Textbook by Rick Halterman #3009
Introduction to Computer Science by Robert Sedgewick and Kevin Wayne. #3010
corrected:
link not displayed correctly(displayed with makdown)
deleted blanc ...Problem Solving] (https://archive.... in Java, Java, Java Object-Oriented Problem Solving by R. Morelli and R.Walde #3011

* issues:add in list #3009,#3010, correction blank in #3011

added:
Object-oriented Programming in JavaTM Textbook by Rick Halterman #3009
Introduction to Computer Science by Robert Sedgewick and Kevin Wayne. #3010
corrected:
link not displayed correctly(displayed with makdown)
deleted blanc ...Problem Solving] (https://archive.... in Java, Java, Java Object-Oriented Problem Solving by R. Morelli and R.Walde #3011

* add 2 books, create [Eiffel](#eiffel),

add
Programming Languages:Theory and Practice - Robert Harper,
A Functional Pattern System for Object - Oriented Design-Thomas Kuhne,
Object Oriented Programming using Java - Simon Kendal

corrections
The Definition of Standard ML (Revised) - SMLFamily GitHub project
Programming Languages: Application and Interpretation (2nd Edition) - Shriram Krishn

* add 2 books, create [Eiffel](#eiffel),

add
Programming Languages:Theory and Practice - Robert Harper,
A Functional Pattern System for Object - Oriented Design-Thomas Kuhne,
Object Oriented Programming using Java - Simon Kendal

corrections
The Definition of Standard ML (Revised) - SMLFamily GitHub project
Programming Languages: Application and Interpretation (2nd Edition) - Shriram Krishn

* swap l.1413 and l.1412%B

swap l.1414 and l.1413%B Line 1414: oriented --> Oriented%B some corrections thanks to eshellman%B correct add one blankline  before ### Subversion%B

* issues:add in list #3009,#3010, correction blank in #3011 (#3026)

* issue #3011 Java, Java, Java Object-Oriented Problem Solving by R. Morelli and R.Walde

* Revert 3021 master (#3025)

* Revert "remove dead link from free-programming-books-tr.md (#3024)"

This reverts commit 0f07297a.

* Revert "Added Git and Github course (#3023)"

This reverts commit 3e9e1ded.

* Revert "Added resources (#3022)"

This reverts commit 500db345.

* Revert "issue #3011 Java, Java, Java Object-Oriented Problem Solving by R. Morelli and R.Walde (#3021)"

This reverts commit 27982680.

* remove space, readd javajavajava

* issues:add in list #3009,#3010, correction blank in #3011

added:
Object-oriented Programming in JavaTM Textbook by Rick Halterman #3009
Introduction to Computer Science by Robert Sedgewick and Kevin Wayne. #3010
corrected:
link not displayed correctly(displayed with makdown)
deleted blanc ...Problem Solving] (https://archive.... in Java, Java, Java Object-Oriented Problem Solving by R. Morelli and R.Walde #3011

* issue #3011 Java, Java, Java Object-Oriented Problem Solving by R. Morelli and R.Walde

* add 2 books, create [Eiffel](#eiffel),

add
Programming Languages:Theory and Practice - Robert Harper,
A Functional Pattern System for Object - Oriented Design-Thomas Kuhne,
Object Oriented Programming using Java - Simon Kendal

corrections
The Definition of Standard ML (Revised) - SMLFamily GitHub project
Programming Languages: Application and Interpretation (2nd Edition) - Shriram Krishn

* swap l.1413 and l.1412%B

swap l.1414 and l.1413%B Line 1414: oriented --> Oriented%B some corrections thanks to eshellman%B correct add one blankline  before ### Subversion%B

* added clarification to title so folks don't think it's the book.

* A MACHINE MADE THIS BOOK ten sketches of computer science by JOHN WHITINGTON (PDF)

* Computer ScienceI, Computer ScienceII, Computer ScienceIII, Searching & Sorting, Trees, Cryptography & Security, Intoduction to Git and Github - Tutorial

by Dr. Chris Bourke (PDF)

* issues:add in list #3009,#3010, correction blank in #3011

added:
Object-oriented Programming in JavaTM Textbook by Rick Halterman #3009
Introduction to Computer Science by Robert Sedgewick and Kevin Wayne. #3010
corrected:
link not displayed correctly(displayed with makdown)
deleted blanc ...Problem Solving] (https://archive.... in Java, Java, Java Object-Oriented Problem Solving by R. Morelli and R.Walde #3011

* add 2 books, create [Eiffel](#eiffel),

add
Programming Languages:Theory and Practice - Robert Harper,
A Functional Pattern System for Object - Oriented Design-Thomas Kuhne,
Object Oriented Programming using Java - Simon Kendal

corrections
The Definition of Standard ML (Revised) - SMLFamily GitHub project
Programming Languages: Application and Interpretation (2nd Edition) - Shriram Krishn

* feat: delete Bourke's Lectures. closes #3050

squash 4 commits (git reset --soft HEAD~4)
delete Trees - Lecture notes because in CS III (git commit --amend)
add (🚧 *in process*) in CS I II III
edit comment aqyash->squash (git commit --amend)
l.1428 and l.1427, delete 2nd double Object Oriented Programming using Java - Kendal
swap l.1429 and l.1428
swap l.1427 and l.1426, delete double Halterman, l.1429 and l.1428, add (PDF)in Pecinovsky
swap l.366 and l.365, l.694 and l.693, l.1428 and l.1427

* added Solidity

* added Solidity

* added Solidity

* bitcoin book added

* fixed ordering on bitcoin book entry

* added authors for bitcoin and solidity books

* added Bitcoin and cryptocurrency Princeton book

* elm interactive playground added (ellie)

* free elm books added

* elm podcast added

* corrected spacing

* reordered elm books into existing category

* reordered format and author

* removed trailing /s

* fixed alphabetical ordering

* added Solidity

* added Solidity

* added Solidity

* bitcoin book added

* fixed ordering on bitcoin book entry

* added authors for bitcoin and solidity books

* added Bitcoin and cryptocurrency Princeton book

* mooc.fi Java courses added