I’m planning to move towards using custom ROMs in order to have more control over what is and isn’t installed on my phone.

I’ve got an old spare S8 that I’m going to use as a testbed first to get hands on and learn a bit more. It looks like LineageOS doesn’t provide a build for that model so I’ll need to learn how to prepare one myself.

I’m no stranger to Linux - I’ve built my own kernel (and even once an LFS system) back in the day - what resources would be ideal for getting up to speed with Android?

I’d hopefully like resources that help me understand what’s going on rather than focus purely on completing one task or another.