* Add MongoDB cheatsheet

I couldn't find this covered in an existing PR, linked cheatsheet is my current go-to.

* Add new section to Index

* Appease linter

* podcst for data science added: not so standard deviations

* Update free-podcasts-screencasts-en.md

removing the trailing slash
Co-authored-by: Nkadhirash <kadhirash@gmail.com>
Co-authored-by: NNaren Bakshi <narenbakshi@Narens-Air.fios-router.home>
Co-authored-by: Nkadhirash <kadhirash@gmail.com>

* add link to cheatsheets

* fix ordering in courses-id

* Added vue.js course pt_BR

* Apply MR changes
Co-authored-by: NVictor Rafael <dev.04@conlifebank.com.br>

Add Thai courses (free-courses-th.md) in list

* adding course of language programming Lua in PTBR

* adding course of language programming Lua in PTBR

docs: transfer links for cheatsheets from books page to new cheatsheets page and add css/js cheatsheets (#4557)

* docs: add links for cheatsheets

* docs: remove links for cheatsheets from books page

* Update free-programming-books.md

* removed index.html

* Committed suggested changes
Co-authored-by: NSeth <seth@elypia.org>
Co-authored-by: NSeth <seth@elypia.org>

* Added Kaggle Python course

* Add Python Runestone to interactive tutorials

* added author

* Added Python and Java playground

* add space back

* lower cased name

* fixed capitalization for Java and JavaScript

Added new resource and fixed and arranged index and resources alphabetically. [Hacktober Fest] (#4510)

* Update free-courses-hi.md

* Listed the order alphabetically

* Added new Resource - Python

* Added open source material of Django for Everybody Course

* Restructured Python and added django and flask sub headings

* Change django for everybody link to a direct link to lessons

* Added required line break

* Minor fix

* Added course in Web Development
ASP.NET Core Beginner Tutorial

* Revert "Updated youtube playlist link for ASP.NET Core Tutorial"

This reverts commit 8042666c76b32dcbd8708dd8f10b11a6e9f8b7bf.

* Added Blockchain Programming Book

* Added the packt link

* Added a Kotlin Playground

* The Kotlin Playground

* add python di prograte course in bahasa

* add c# course in bahasa

* delete python no playlist course

* fixing index c# in course bahasa

* add course git bahasa

* delete same title in course bahasa

* add french lessons for rust

* fix blank line from the linter

* update according to the contributing file
Co-authored-by: Nkadhirash <kadhirash@gmail.com>
Co-authored-by: Nkadhirash <kadhirash@gmail.com>

* Added data structure course by mycodeschool

* link changed to playlist

* Added kotlin tutorial resource

This resource is provided by Tutorialspoints.

* arranged in a order

* kotlin tutorial docs added(official)

* Added two new books check_urls=free-programming-books-de.md

* Removed source as it is not a Book

* Add links to erlang resources for italian section

* Review

* Added Next.js and "Mastering Next.js" course

* spaces

* no trailing slash

* Update free-courses-hi.md

Added Data Structures, and made some structural changes according to the guidelines.

* Update free-courses-hi.md

Updated the links in the Data Structures Topic.

* Update free-courses-hi.md

* Add tutorial rails girls

* Add Rails Girls tutorial as requested in #4484

* Updated commit as requested in #4484

* Create free-courses-th.md

* Update free-courses-th.md

edit break line

* Update free-courses-th.md

-edit line break (3 lines)
-edit 3 names of cources from marcuscode.com(C, C#, C++, Js, Py)

* Update free-courses-th.md

change (Author) to " - "

* Update free-courses-th.md

edit [ภาษา Javascript] to [ภาษา JavaScript]

* Update free-courses-th.md

alphabetize

* docs: create additional page for cheatsheets

* docs: update cheatsheets page and add link to html/css section

* docs: add empty line at the end of the file

* Add UA courses file with Python course

check_urls=free-courses-ua.md

* Add link to README; fix link

* Update free-courses-en.md

Added Flexbox & CSS Grid free video resources to the repo

* Update free-courses-en.md

* Update free-courses-en.md

Removed the trailing slashes from the root domain

* Update free-courses-en.md

Added free Javascript30 course from Wesbos

* Markdown video course

Added free Markdown video course

* Update free-courses-en.md

* Update free-programming-books.md

Added a free markdown resource that covers all the basics concepts

* add Construindo APIs testáveis com Node.js book

* ajust alphabetical order

added a new podcast in data science category (pt-br)

* Add esfiddle

* Make alphabetical

* Remove / at the end of url