Web Development: HTML CSS : https://www.youtube.com/watch?v=hu-q2zYwEYs&list=PL4cUxeGkcC9ivBf_eKCPIAYXWzLlPAm6G

Javascript: https://www.youtube.com/watch?v=iWOYAxlnaww&list=PL4cUxeGkcC9haFPT7J25Q9GRB_ZkFrQAc

Django: https://www.youtube.com/watch?v=SIyxjRJ8VNY&list=PLsyeobzWxl7r2ukVgTqIQcl-1T0C2mzau

Crash Course (HTML CSS Javascript React Vue ...): https://www.youtube.com/watch?v=UB1O30fR-EE&list=PLillGF-RfqbYeckUaD1z6nviTp31GLTH8

Checkout Freecodecamp (For everything. They have uploaded React, Numpy, Javascript Python, Blockchain, Discord app, web scrapers to almost everything): https://www.youtube.com/channel/UC8butISFwT-Wl7EV0hUK0BQ

For any Cheatsheet: https://devhints.io/

Forgotten git commands then git sheet: https://gitsheet.wtf/

Web Dev: https://andreasbm.github.io/web-skills/

Flutter for beginners : https://youtube.com/playlist?list=PL4cUxeGkcC9jLYyp2Aoh6hcWuxFDX6PBJ

Official Flutter Docs: https://flutter.dev/

Flask full web application tutorial: https://youtu.be/dam0GPOAvVI

Design resources https://www.designresourc.es/

Material Design Guidelines https://material.io/