Where are sources that I can find how to script above a beginner-level (2019)?

I want to learn how to script, but I know the basics. I'm not a complete beginner.

I know the basics such as: Properties, While Loops, Print, Variables, and Wait ().

API - https://developer.roblox.com/api-reference

Help - https://devforum.roblox.com/ and https://scriptinghelpers.org

Tutorials / Articles - https://developer.roblox.com/learn-roblox/coding-scripts