* 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

* Added data structure course by mycodeschool

* link changed to playlist

* 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

* Update free-courses-en.md

* Update free-courses-en.md

* added courses

* space fixed

* 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

Added one course link on machine learning topic

* Added Open Source Reading Materials and Videos of Python for Everybody offered by Coursera

* Removed Coursera link and changed resource title

* Alphabetical ordering

* Stanford Java course link

* put the new link alphabetically

* add react native tutorial

* add author's name for react native course

* add a space line

* [Princeton Algorithms, Part 2](https://www.coursera.org/course/algs4partII)
* [Machine Learning Mini Bootcamp](https://lambdaschool.com/free-course-machine-learning/)

Links were down as of 10/17/20

* Learn Ruby

Added a Ruby online material for learning

* Formatting updated

I formatted the contribution by fixing the alphabetical order of my Learn Ruby tutorial.

Added a new Python programming tutorial

Added a new Python tutorial

Added a new PHP tutorial

* Update free-courses-en.md

* Update free-courses-en.md