* 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

Free in the github repo, and also available as a hard copy for purchase.

* 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.

* add russian translate of SICP

* fix

* fix fix

* Added free finnish online courses

* Alphabetical order and removed unnecessary lines

* Adjusted lines

* Remove trailing slash

* Re-add Nodeup as it's not really dead #2823

Looked at #2823, evaluated all the links in the free-podcasts-screencasts-en.md section and only Nodeup still exists

* fixing line space

* add PHP course in russian

* PHP Russian basics

* blank lines fix

* add PHP to index

* add link phpunit russian manual

* fix order

* fix blank line

* 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

* Remove dead link from free-programming-books-tr.md

* Change Django heading to same size as other headings

* Added Git and Github course

* Ordering the list alphabetically

* Added resources
Added resources for Android, Bash, C, C++ and C#.

* Fixed the order of the entries
Fixed the order of entries of the previous commit and arranged them in ascending order.

* remove-dead-links

remove dead urls (404's) and sections that no longer contain resources

* remove one more dead link

Remove an additional link that resolved, but contained no information

* remove indexes with no links

remove dead link from free-programming-interactive-tutorials-en.md

Remove "under construction"  for "Developing with Angular" book

* Add Swift Vapor resources

* Reorder Vapor resources alphabetically

* Add author to Vapor 3 tutorial

* Move vapor university to free-courses-en.md

* Add series of tutorials : Android for beginners and Object oriented programming for PHP

* Add new line at the end of the file , prevent warning  Missing newline character at end of file.

* Add link in README.md for Bulgarian courses

* Spanish SVN book

* Add svn to index

* Add svn to index x2

* Try to fix this

* Try to fix this x2

* wtf

* O'RLY?

* Add series of tutorials : Android for beginners and Object oriented programming for PHP

* Add new line at the end of the file , prevent warning  Missing newline character at end of file.

Added Super data Science podcasts.
Very informative and knowledge rich podcasts.

* Fix playgrounds alphabetical order

* Add Scala to playgrounds index

* Add online Swift playground

This course is no longer free. It requires a paid subscription.

* Add new book of React and Redux (Spanish)

* Fix Lint

let me know if you think it reads better. thanks!

* Added Introdução a Visão Computacional com Python e OpenCV - PDF

* Added Introdução a Visão Computacional com Python e OpenCV - PDF 2.0

* Added Speech and Language Processing PDF

Speech and Language Processing, An Introduction to Natural Language Processing, Computational Linguistics, and Speech Recognition Third Edition draft by Daniel Jurafsky & James H. Martin

* Fixed PDF label