You can join our community in Discord (unfortunately Discord is where the community is), there's also a couple good guides, Arglin's Line Rider for Dummies and Malizma's .com guide, and you could also just watch videos and make tracks, which is imo the best way to learn.
I use GPT 4 for checking Physics Problems quickly. It's much better than education forums nowadays where you have to sign up and probably pay a subscription to be able to view questions
As a Line Rider Creator, I'd get Line Rider Overhaul, Ungoogled Chromium with the linerider web app, get a bunch of mods and download a bunch of cool .ogg's.
I think at least there should be at least a digital queue system so that you can just get an automated call back instead of having to wait for hours listening to the hold music.
Back when I was like 13 and on reddit, I posted what I thought was a good open question to askreddit, and it immediately got deleted with no stated reason. Now, I can ask any interesting question I have, and receive tons of interesting responses from people!
Good on them