Python C# JavaScript TypeScript Java

If you have no experience in programming, then the following free materials are recommended to pass:

Iakiv Kramarenko's book: Intro to Software Development (with examples in HTML, CSS, JavaScript)

Harvard's CS50 on edx.org

any of java courses on edx or Udemy (1, 2, 3) OR something simpler like learnjavaonline.org/

For installation questions, this guide may help.

If you have experience in programming, but not with Python, then you can quickly get familiar with the language through:

Fast intro to the language syntax: Learn X in Y minutes Where X=python3 Learn X in Y minutes Where X=java (російською)Learn X in Y minutes Where X=javascript ()Learn X in Y minutes Where X=C#
Interactive simple tasks on syntax in the form of tests: Python KoansJava KoansJavaScript Koans.Net Core Koans

Guide from Brian Torres-Gil on setting up the environment (pyenv + poetry) in Mac OSX: Definitive Guide To Python On Mac-OSX, you can ask google about similar materials for Windows or Linux, if relevant;)
The site and book from Okken Brian about pytest: Python Testing with pytest
Classic videos about idiomatic Python: Transforming Code into Beautiful, Idiomatic Python, Python's Class Development Toolkit

In the remaining time, you can practice more and harden your skills using one of the following resources:

CheckIO

CodinGame

Once you are familiar with JavaScript, and yet interested to code in TypeScript, go and quickly learn its basics by passing something from:

Also, it will be more convenient for you if you will save versions of your code for solving certain problems - using version control systems. I recommend using git and one of its most popular servers – github.com. Here's a free tutorial on the topic: Github - Hello World.