Online Tutorials and References

LeetCode: LeetCode - The World's Leading Online Programming Learning Platform
FreeCodeCamp: Learn to Code — For Free — Coding Courses for Busy People (freecodecamp.org)
W3schools: W3Schools Online Web Tutorials
CodeSandBox: CodeSandbox: Code, Review and Deploy in Record Time
MDNWebDocs: MDN Web Docs (mozilla.org)

Youtube Tutorials
CS50: https://www.youtube.com/@cs50
MIT: https://youtube.com/@mitocw
Code.org: https://youtube.com/@codeorg
Traversy Media: https://youtube.com/@TraversyMedia
FreeCodeCamp.org: https://youtube.com/@freecodecamp
JavascriptMastery: https://youtube.com/@javascriptmastery
Telusko: https://youtube.com/@Telusko
AmigosCode: https://youtube.com/@amigoscode