* Added freeCodeCamp courses

Added courses of HTML, CSS and Javascript

* Update free-courses-en.md

* Update free-courses-en.md

* Update free-programming-interactive-tutorials-en.md

* Update free-programming-interactive-tutorials-en.md

* Update courses/free-courses-en.md
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* Update more/free-programming-interactive-tutorials-en.md
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* Update more/free-programming-interactive-tutorials-en.md
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* Use each course url instead of its track from belongs to
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* Update free-programming-cheatsheets.md

add polish git cheatsheet

* Update free-programming-cheatsheets.md

add lang notations for portuguese vim cheatsheets

* feat: add Allison's Vim cheatsheet

Closes EbookFoundation/free-programming-books/pull/6091
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

Resolves review: https://github.com/EbookFoundation/free-programming-books/pull/6073#discussion_r740551665
Closes #6073

* Update in Java Compiler and in C Compiler

Add Compiler in Java and C section

* Update in online compiler.

Add Jdoodle compiler in Java and Programiz - C Compiler in C.

* Update more/free-programming-playgrounds.md
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* Update more/free-programming-playgrounds.md
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* Update more/free-programming-playgrounds.md
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* Update more/free-programming-playgrounds.md
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* Updated

Please Review
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* Programiz

Added another python shell for programming online

* Alphabetic order typo fixed

Now the contribution is embbeded in alphabetical order

* Update programming playgrounds list with Scratch

Added scratch playground link in the programming playgrounds

* Update more/free-programming-playgrounds.md
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* Added Books for Go, Added interactive tutorials

Added Go succintly which is freely available on the mentioned website.

Added Go Web Development Succintly which is freely available on the
mentioned website.

Added interactive tutorial websites learn-golang.org, learn-html.org,
learnsqlonline.org

* Added suggested changes

* Added Expos Guide in books for Operating Systems

* Added more details on expos
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* Update a Brasilian competitive programming website.

* Apply suggestions from code review to the file, after the domain was checked.
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Co-authored-by: NFernando Pimenta <fernandopimenta@tecnosys.com.br>
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* Add Vue.JS 2.3 Complete API CheatSheet - Marozed

* Add Algorithm books from goalkicker.com

* Fix the Add Vue.JS 2.3 Complete API CheatSheet - Marozed

* add creator note
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* add creator
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* Recover deleted white line
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* Update books/free-programming-books-langs.md
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* Update free-programming-cheatsheets.md

* Update free-programming-cheatsheets.md

* Update free-programming-cheatsheets.md

* Update free-programming-cheatsheets.md

* Update free-programming-cheatsheets.md

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* Update problem-sets-competitive-programming.md

* Update problem-sets-competitive-programming.md

* Update free-programming-interactive-tutorials-en.md

* Update free-programming-interactive-tutorials-en.md

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* Updated Cheatsheets with New sources

2 Links added.
1. C++ - Cheatsheet Greg Book 2002
2. MongoDB codecentric Cheatsheet

* Updated Commit - alphabetical order

* Updated and corrected space as per Guidelines

* Rollbacked incorrect Space Mistake

* Removed C++ cheatsheet, for which proper attribution source not available

* use correct title
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Co-authored-by: NEric Hellman <eric@hellman.net>
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* Add glitch.com to programming playgrounds

* use the short URLs (belonging to Glitch only)

* update listings

* alphabetical order

* Add PHP cheat sheet

* Remove auto indention

* Remove auto indention

* Update alphabet sorting

* Update
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* Update more/free-programming-cheatsheets.md
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* added new resources in cheat sheet file

* added new resource

* move to new position

* arrange the position

* arrange the position

* fixed problems

* fixed the space rows

* changed position into alphabetical

* Update more/free-programming-cheatsheets.md
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* Update courses/free-courses-id.md
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* Update more/free-programming-cheatsheets.md
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* Update more/free-programming-cheatsheets.md
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* C++ Java Go R Cheatsheets Added

* fixed alphabetical order

* R removed and other source updated

* name updated

* fix Go name

* Add "V Playground" to Programming Playgrounds

* minor change

* Add V to index

* Implement the suggestion
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Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

Co-authored-by: Andrey <>
Co-authored-by: NEric Hellman <eric@hellman.net>

- Change to `https` in those accepts SSL secure protocol
- Remove `cssdeck.com` dup
- Remove `ScalaFiddle.net`. Casino parked website. Right site already listed: `ScalaFiddle.io`
- Direct links on `codepad.org` to each language
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* jQuery Tutorial Added

* Default removed from link

* Adding grasshopper for playgrounds for javascript

Added grasshopper as a programming playground

* Update more/free-programming-playgrounds.md
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* feat(playground): Add regex section

* feat(playgrounds): Add regex101.com by Firas Dib

* feat(playgrounds): Add regexr.com by GSkinner

* feat(playgrounds): Add regextester.com @ Dan Tools

* feat(playgrounds); Add iHateRegex.io by GeonGeorge

* bootstrap 5 tutorials added

* updaded fix

* Add PyTorch Cheat Sheet

* put lists in order

* fix order

* Update free-programming-interactive-tutorials-en.md

* Update free-programming-interactive-tutorials-en.md

* Fix linting errors

* Fix linting errors

* Update more/free-programming-interactive-tutorials-en.md
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* Update free-programming-interactive-tutorials-en.md

Add another resource and rename the section

* Update free-programming-interactive-tutorials-en.md
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* add to documentation

* Added RPi cheatsheets

* Update free-programming-cheatsheets.md

* Update free-programming-cheatsheets.md

* Update free-programming-cheatsheets.md

* Update free-programming-cheatsheets.md

* Update free-programming-cheatsheets.md

fixed 404 broken link issue

* Update free-programming-cheatsheets.md

* Update CONTRIBUTING.md

* Added Blockchain books -PDF

* Delete free-programming-books-langs.md

* Re-added books

* Additional changes, mods.

* Update free-programming-books-langs.md

* Modifications contrib.

* Update CONTRIBUTING.md

* Update CONTRIBUTING.md

* Additions for Tensorflow cheatsheets (other branch)

* Update free-programming-cheatsheets.md

* Changes on other files

* Update free-programming-cheatsheets.md

* Additional changes

* Final changes for cheatsheets page nl ends.

* Update free-programming-cheatsheets.md

added the official content from kaggle for TF (includes pdf link, html only)
removed the blog TF link at the top (as per contributing.md guidelines)

* Update free-programming-books-langs.md

About: Blockchain additions, removed all the whitepapers from the list.

Why is the "Introducting Eth*" allowed in the PDF list of ebooks and the "*for dummies" series  not allowed? I do not see that rule in the contributing.md file
AFAIK, both are online ebooks links, both with an ISBN/Table Of Contents for chapters.

Either way, i replaced the first one with one that is free from offic. ibm public link

* delete patch

* Remove patch. not free
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* use wayback machine to provide its backed PDF link
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* add in process, creator
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* blockchain is not a language. the dummies book should be is subjects list
Co-authored-by: Neric <eric@hellman.net>
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* Add nim playground to playground list

* Add correct spacing between headers

* Add organisation to link
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* Added free-programming-playgrounds for Solidity

* Added free-programming-interactive-tutorials-en for Solidity

* Update free-programming-interactive-tutorials-en.md

* Added free-programming-cheatsheets for Solidity

* Added free-courses-en for Blockchain

* Update free-courses-en.md

* Update free-courses-en.md

* Update free-courses-en.md

* Update free-programming-cheatsheets.md

* Update free-programming-cheatsheets.md

* Update free-programming-cheatsheets.md

* Update free-courses-en.md

* Update free-programming-playgrounds.md

* Update free-programming-cheatsheets.md

* Update free-programming-interactive-tutorials-en.md

* Update free-programming-playgrounds.md

* Recover deleted Manoj Ramesh resource
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* Update more/free-programming-playgrounds.md
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* add creator
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Co-authored-by: NEric Hellman <eric@hellman.net>
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* Add Nuxt.js Cheatsheet

* Sort nuxt.js cheatsheet alphabetically

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* add C++ Playground

* Remove trailing slash

* Update problem-sets-competitive-programming.md

* Update problem-sets-competitive-programming.md

* Update problem-sets-competitive-programming.md

* Added Remix IDE to the Playgrounds file

A powerful Browser IDE for playing around with Solidity smart contracts!

* Update more/free-programming-playgrounds.md
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* whitespace
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* spaces
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Co-authored-by: NEric Hellman <eric@hellman.net>