* Added a useful resource

Have added a useful resource about the Bootstrap from the Scaler topics in the Bootstrap section.

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

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

* fix: spaces between link markup tokens
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

* Create free-programming-books-lv.md

* Added Latvian

+17k new stars
+100 new commits
+30 new contributors
+3k new forks

Period: From 05-feb-2022 - 30-jul-2022

Resolves #6976

* Added new Arabic Podcasts

* Arabic Podcasts added and reoredered

* Solved github errors upon pull request

* Solved github new line error errors upon pull request

* Alphabetic reorder

All the Electron JS Videos are private.

* add new arabic courses

* fix extra new line

* fix order

* add some missing ‏

* delete courses that dependent on paid books

* fix(books): free-programming-books-ru broken links

* fix(books): removed trailing slash

* added 'in progress'

* Adding Pascal

Adding Pascal references

* Formatting and minor changes

Adding PDF/HTML tags and re-arranging into alphabetical order

* Fix alphabetical ordering

* Change author name
Co-authored-by: NEric Hellman <eric@hellman.net>

* More description for Turbo Pascal
Co-authored-by: NEric Hellman <eric@hellman.net>

* Adding author
Co-authored-by: NEric Hellman <eric@hellman.net>

* Add origin info
Co-authored-by: NEric Hellman <eric@hellman.net>
Co-authored-by: NEric Hellman <eric@hellman.net>

* update node&react sources

* changes books

* Update free-programming-books-langs.md

* lint: alphabetize

* chore: recover deleted resource at b1188ba1e198f1641e4e16e969c576b9ff88c497 and move to courses
Co-authored-by: Nxuandai-py <66566048+xuandai-py@users.noreply.github.com>
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>
Co-authored-by: NEric Hellman <eric@hellman.net>

* format: add resource authoring

* format: normalize access notes

* fix: access notes about heynode.com
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>

* Revert "fix: access notes about heynode.com"

This reverts commit feb84cae5b8537eb3c7432a47556cd24e04d8300.
Co-authored-by: Nhermitcrab <hermitcrab@pop-os.localdomain>
Co-authored-by: Nxuandai-py <66566048+xuandai-py@users.noreply.github.com>
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>
Co-authored-by: NEric Hellman <eric@hellman.net>

* fix(books): free-programming-books-fr broken links

* fix link

* Adicionando tres playlists flutter 

Deivid Willyan | Flutterando
Gostei das playlists do Deivid, acredito que acrescente muito ao material do Flutter

* lint: solve rule `blank-lines-1-0-2` fault

* chore: fix videos authorship

* format: escape markdown from resource titles

* format: use YouTube playlists instead of it first video url

* lint: solve rule `alphabetize-lists` fault
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

* Update free-courses-en.md

* format: Remove video timing param from ulrs and escape pipes from titles

Addresses #6723

* format: escape markdown tokens from resource title
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

* Added playground definition

Added a small definition about programming/coding playgrounds for making it understandable to beginners

* Define what is a playground

Via / completes:
- What's a programming playground? #6107
- Added playground definition #6817
- Sentence added under playground #6819

Thanks @Suman373 for the initial idea.
Co-authored-by: NSuman Roy <95040233+Suman373@users.noreply.github.com>

* reword playground definition as suggested
Co-authored-by: NEric Hellman <eric@hellman.net>

* copy #6822 playground definition into rest files

* translate #6822 (playground definition) to spanish

* translate #6822 (playground definition) to italian
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>

* translate #6822 (playground definition) to french

Thanks to @Existential-nonce
Co-authored-by: Nnonce <77142078+Existential-nonce@users.noreply.github.com>

* translate EbookFoundation#6822 (playground definition) to chinese

Provided by @kang8. Thank you too much!
Co-authored-by: kang <1115610574@qq.com>

* Improve playground definition in `zh_TW` language
Co-authored-by: NAlan Syue <33183531+AlanSyue@users.noreply.github.com>

* Minor improve playground definition in `fr` language
Co-authored-by: Nlorrding <mathias.berthonneau@gmail.com>
Co-authored-by: NSuman Roy <95040233+Suman373@users.noreply.github.com>
Co-authored-by: NEric Hellman <eric@hellman.net>
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>
Co-authored-by: Nnonce <77142078+Existential-nonce@users.noreply.github.com>
Co-authored-by: kang <1115610574@qq.com>
Co-authored-by: NAlan Syue <33183531+AlanSyue@users.noreply.github.com>
Co-authored-by: Nlorrding <mathias.berthonneau@gmail.com>

* Adding A Complete Guide to Standard C++ Algorithms

* Update free-programming-books-langs.md

Adjusted description and added a link to the latest PDF on the linked README.md.

* Update books/free-programming-books-langs.md
Co-authored-by: NEric Hellman <eric@hellman.net>

* feat(books): add Web Development book in english langs file

* changed url

Added a new Next.jS by the famous **CodewithHarry**/

I have added a new course under the Django section. It was undoubtedly a must. It teaches everything from head to toe! From creating a simple **Hello World** site to a fully functional website to deployment! All is here!

I have added a new, head-to-toe, yet free course under the Flask section. I personally have taken this course on YouTube and I have to say it was phenomenal. It's also one of the very few updated tutorials regarding Flask out there, as of recently updated in Feb 2022. It also has a lot of detail, which is worth knowing!

* Add `Front-End Developer Handbook 2016`

* Add `Front-End Developer Handbook 2017`

* Add `Front-End Developer Handbook 2018`

* Add `Front-End Developer Handbook 2019`

Resolves #6931

* Written by Cody Lindley

* Add `JavaScript (ES2015+) Enlightenment`

* lint: alphabetize-lists

* format: Complete authoring of `React Enlightenment`

* only one link is enough, it said the boss

* delete `sponsored by` author: `Frontend Masters`

* add bootstrap course by Abdelrahman Gamal

* add js course by abdelrahman gamal

* add Assembly course to ar courses

* fix Alphabetical ordering

* add php course to ar courses

* add jQuery course to ar courses

* fix rtl in js course

* fix rtl in php course

* fix rtl in jQuery course

* fix bootstrap course name

* fix Assembly course

* Update free-courses-bn.md

* Update free-courses-bn.md

* Update free-courses-bn.md

* Add `From JavaScript to Rust ebook` by Jarrod Overson

Resolves #6840

* Use Github HEAD link to PDF file instead repo
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>

* lint: add PDF format
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>

* feat: add `vcs` section

handles proposal(lists): Merge Version Control Systems into same section #5526

* chore: move GIT resources from books to subjects

handles proposal(lists): Merge Version Control Systems into same section #5526

* chore: move Mercurial resources. books 2 subjects

handles proposal(lists): Merge Version Control Systems into same section #5526

* lint: alphabetize Mercurial resources

* chore: move Subversion resources. books 2 subjects

handles proposal(lists): Merge Version Control Systems into same section #5526

* lint: alphabetize Subversion resources

* add resource authoring
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>

* format: Add archived notes to http://gitref.org/

handles #6301
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>

* Update http://svnbook.red-bean.com resource

- To `https`
- Use localized `index.html`
- Add book authoring
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>

* Add resource authoring
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>

* format: Add archived notes to http://rypress.com/tutorials/git/index

handles #6301
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>

* Add mosh hamedani git cheatsheet (pdf)

* fix linter error.

* remove unwanted line

* Update free-programming-cheatsheets.md

Fixes OWASP Testing Guide 4.0 link is invalid #6921
Address lint: Broken links reported from urlchecker #5470

Added the DALLE-E 2 prompt book by Guy parson which contains hundreds of prompts for creating images with DALLE-E 2.