added new best technology react native course for beginner

added best android development for all beginners

* Adding 5 free Bootstrap courses!

There were only 2 resources for the Bootstrap section, so I built this out with courses from Freecodecamp, YouTube, and Class Central.

* Adding 5 Bootstrap free courses (alphabetized)

Needed to alphabetize them :)

* Fixing YouTube link endpoint + removing "YouTube" specification

Hi @SethiPandi — thanks for the comments and the warm welcome to Hacktoberfest! 🎃 I have done the following from your feedback:
- fixed the YouTube endpoint so it links to the playlist (not the original video)
- Removed YouTube specification from the two resources that are YT videos

Let me know if you need any other changes from me 😊

* Add My Free Java Course to free-courses-en list

* Removed empty spaces and added author

* Add python kaggle course to free-courses-en list

* Updated Java Course with direct link and correct name

* Removed extra white space around hyphen

* update file

added best data science learning tutorial

* update file

* update file

adding most popular deep learning playlist

* update file

* update file

* update file

* Add "Introduction to Reinforcement Learning"

Add "Introduction to Reinforcement Learning" / David Silver

* Update free-courses-en.md
Co-authored-by: NSeth <seth@elypia.org>
Co-authored-by: NSeth <seth@elypia.org>

* Update free-courses-en.md

* Update free-courses-en.md

* Add beginner youtube tutorial by freecodeCamp

* Add two kotlin courses

* Update format convention - fix author credit

* Update free-courses-en.md
Co-authored-by: NSeth <seth@elypia.org>

* Move existing course from android to kotlin section
Co-authored-by: NSeth <seth@elypia.org>

* Add DenoJS Beginner Course

Add DenoJS section and a free Deno Beginner Course

* fix the order

* fix CI lint error

* Add author name and email required

* Fix formatting for the required field

* Update free-programming-books.md

* Update free-courses-en.md

* Update free-programming-books.md

* Apply suggestions from code review
Co-authored-by: NSeth <seth@elypia.org>
Co-authored-by: NSeth <seth@elypia.org>

* Add Docker courses from #3856 issue, check_urls=free-courses-en.md

* Reword titles to playlist titles

- Remove repeated Sails.js entry from index;
- Change Assembly position to place in alphabetical order

* Update free-courses-en.md

* Update free-courses-en.md
Co-authored-by: NSeth <seth@elypia.org>
Co-authored-by: NSeth <seth@elypia.org>

the course is not online any more

* add ios course from harvard

* add author names at ios course

* update playlist at the ios course

* add game course from harvard

* add author names at game course

* update playlist at the game course

* add android course track by harvard

* fix alphabetical order at free courses android

* add author names at android course

* update android to android playlist

* undo removed course

* update playlist url
Co-authored-by: NLarissa <larissa.moura@codeminer42.com>

* Add Python 3 Book

Python 3 book from DigitalOcean.

* Update list to add learning Processing resource

Reattempted.

* Update podcasts-screencasts-en.md

Changed playlist and added the contributor name.

* Alphabetize Processing playlists

Alphabetize the processing playlists added.

* Removed Processing Resource

Removed Processing YouTube links from screencasts.

* Updated free-courses with Processing Resource

Added processing resource in free courses list.

* Update free-courses-en.md

This is a course from Harvard University's CS50 about Web Programming with Python and JavaScript.
You can know it is free  by looking at the 'CS50 Certificate' section you can read that you only need to pay for the certificate but the course is Free.

* Update free-courses-en.md

Resubmitted the PR by changing the title as given by the resource.

* Update free-courses-en.md

Resubmit PR with the title as given by the resource: CS50’s Web Programming with Python and JavaScript.
Added in Alphabetical List.
Sorry,but it is my first PR so struggling a little bit.

* Update free-courses-en.md

Added Using Python for Research course from edX Harvard.

* add algorithms course

* update css50 course description

* update alphabetical order
Co-authored-by: NLarissa <larissa.moura@codeminer42.com>

* Update free-courses-en.md

This is a course from Harvard University's CS50 about Web Programming with Python and JavaScript.
You can know it is free  by looking at the 'CS50 Certificate' section you can read that you only need to pay for the certificate but the course is Free.

* Update free-courses-en.md

Resubmitted the PR by changing the title as given by the resource.

* Update free-courses-en.md

Resubmit PR with the title as given by the resource: CS50’s Web Programming with Python and JavaScript.
Added in Alphabetical List.
Sorry,but it is my first PR so struggling a little bit.

This course is on Udacity and is taught by Google Developer.

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 Next.js and "Mastering Next.js" course

* spaces

* no trailing slash

* 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

* Add: Beginner's Series to: JavaScript & Beginner's Series to: Node.js

* fix link

Added  python and HTML/CSS course links for beginners as part of hacktoberfest2020 (PR resubmission) (#4298)

* Added a python course link

As  part of hacktoberfest20

* updated free-courses-en.md with a new link

As  per the requirements the link is alphabetically added

* Added an HLML&CSS course link

* Changed the extra blanklines

* updated with platform and tutor name

* updated the course list

* Updated the file again

* updated the list

* Added Dart Programming

* Added dart programing language