In each folder, you can find information to help further increase skills in the specified language. In some, there are downloads for the language and an IDE. An IDE is software used for writing your code and making the development as easy as possible. The IDEs that are included are not the only available ones, feel free to use whichever suits you the best.
Python
Download - Python 3.8.3
Google Python Class - A simple and easy to understand python course that covers the basics of the language - Easy - Medium
TwilioQuest - A fun way to learn python. Learn by playing a game that makes you master the basics of python in order to advance - Easy
Java
Download - Java 8
IDE Download - Eclipse
Java 101 - Quick lessons on specific Java topics - Medium
Sololearn - An extended course all about java, starting with the basics and moving on all the way to advanced topics - Medium
Web Development
IDE Download - Notepad++
Code.org - Learn web development and plenty of other fun computer exercises - Easy
Khan Academy - Informative lessons from top rated educators covering a large variety of topics covering Java Script and other web development tools. - Medium
General
Codecademy - Online courses with wide ranging difficulties and languages. There is something here for everyone.
Codewars - Test your programming skills by writing and debugging code, difficulty can be controlled by the user.
Coursera - Find a course that is specific to your interest that is likely taught by a collegiate professor. Difficulty ranges from beginner all the way up to earning a college degree.