* Update free-courses-en.md

Added a Python online resource under the Python course section.

* Update free-programming-books.md

Added techbeamers to meta-list section.

* Add Foundation of Data Structures to free-courses list

* Add Foundation of Data Structures to free-courses list

* Add Foundation of Data Structures to free-courses list with correct number of blank lines

* fixed link

* remove trailing slash to satisfy linter

* Update free-programming-books-ru.md

Added authors names, link to Stolyarov's "Programming Intro"

* Update free-programming-books-ru.md

Alphabetization

* Update free-programming-books-tr.md

* Update free-programming-books-tr.md

Updated in alphabetical order

* Update free-programming-books-tr.md

added authors

* Update free-programming-books-tr.md

* Koma-Script

* add space to satisfy linter

* another space to satisfy linter

* Added Microservice Databases: Migrating from Relational Monolith to Distributed Data (By O'Reilly)

* fixed concerns

* Added the bash book to the books section

I have attempted to add the bash book to the book section again. There was  an issue the last time , i tried to propose the file change as i had not placed it in alphabetical order. Someone please review this :)

* fixed alphabetization

* Add couple of book for PHPUnit

* Added PDF text to the links

* Added PHPUnit Best Practices

* Alphabetically arranged

resources suggested by @kareUdon

* Add list of courses in Spanish.

* Update readme to add list of courses in Spanish.

* Correct titles in the list.

* Update free-programming-books-es.

Update, add and clean links. add books, add authors and correct types of
documents. Delete paid links or broken.

* Correct cli errors.

* Correct Cli Errors - 2

* Fix alphabetical ordering.

* Fix alphabetical order and a some link and angle bracket.

free-courses-es.md: Correction of links and anchors.
free-programming-books-es.md: Alphabetical ordering.

* Fix 2635#pullrequestreview-76815495

@eshellman If I finish with updating the documents in Spanish  #2635
before Black Friday.
You could give me a new pc for me work?   👅 Of Christmas
🎁...  🤐 🤐       Ok, joke..
sorry.

I m going to work 💪  ☺ I need to do it, to feel satisfied
with myself 😎

* [JavaScript and Node FUNdamentals](https://web.archive.org/web/20150327025334/https://leanpub.com/jsfun/read) - Azat Mardanov is not a free programming book

* implement #2357

* misc cleanup

* Update javascript-frameworks-resources.md

* Update javascript-frameworks-resources.md

* Update javascript-frameworks-resources.md

* Update javascript-frameworks-resources.md

* add 🚧 emoji per CONTRIBUTING

Also, get a start on uniform notation of leanpub books

Author deleted page partially.
He write message on the page: This book has been removed as it will shortly be published by APress.

*  added link to Directory of free Javascript ebooks

* link fix Directory of free Javascript ebooks and sorting in alphabetical order

* updated link

*  Sorry, Corrigir e retirei o link

* Revert "correcting and removing the link

This reverts commit 5059e43931299d7fcdd017ae53c8c742ea36dd1f.

* Clean up the Oberon books

The Project Oberon book was duplicated under both Operating Systems and
Misc; plus a better link for Programming in Oberon.

* Add direct PDF links and authors for Oberon books

Add R section to playground and add R-Fiddle to it.

* add "Python-Kurs"

* correction: move to courses

* add empty lines to satisfy linter

* Added a few swedish developer podcasts

* Changed link protocol to https where applicable and added trailing new

* Added a link in the README to the Swedish podcasts file

* Update free-programming-books.md

Added Django Girls tutorial. Since it's not an interactive tutorial i have added it to books section.

* Update free-programming-books.md

Moved Django Girls Tutorial to the top of the Django books list according to alphabetic order.

* Add Procedural Content Generation in Games

* Remove trailing slash

Remove trailing slash to fix a CI-flagged error.

* Added a course in Web Development

Added Freecodecamp in web development. Free code camp is a free course featuring building projects and getting certificates.

* update free code camp in alphabetical order

* update verilog

update a free source of verilog quick reference

* substituted authoritative source for the quick reference guide

(PR has been sitting for a year)

* add "Framework Backbone (Javascript)"

- Série de artigos (tutoriais) sobre o framework Backbone para JavaScript
- http://www.devfuria.com.br/
- pt-br

* satisfy linter!

added Funtional C ; free download & more info at https://research.utwente.nl/en/publications/functional-c (#2613)

Fix a small mistake that causes errors in display of the courses list.

Delete Book which not free now

* Replace homepage with GitHub repository link

problem-sets-competitive-programming.md: Replace homepage
link of problembook with github repository link which contains
downloadable pdf links.

* Remove broken links

Remove broken links and update available links from
web.archive.org.

* Update broken link with updated link.

Update the description for the updated link.

* Update broken links with links from web.archive.org

Remove dead links.

* Restore path to original link instead of web.archive.org

The link seems to be working fine. It was not loading
on my network, probably due to regional restrictions.

* Remove github link which is no longer maintained.

Github link consisted of list of Big Data resources.
The repository has been deleted by the user.
Hence deleting the entry.