As others have said, get a manual for your car if its available (typically Haynes or even a factory service manual if its cheap). Aside from this i think ChrisFix on YouTube does one of the absolute best jobs of explaining tasks such as replacing your brakes in a way that even someone without any knowledge can follow along and using basic hand tools. A lot of other channels can show you similar tasks but he can explain it all without leaving knowledge gaps as many others assume you already know how to turn wrenches.

I learn similar to you and do almost all my own services on my vehicles and have quite a bit of experience working on cars, but even still I like to Google to find specific videos on services that I haven't done before and watch them several times in the days leading up to performing the service. This helps me absorb all the steps, so I feel more confident that I'm not going to miss something or get overwhelmed and put myself into a bad situation (like breaking some ancillary part or getting halfway into something it turns out I don't have the skills/tools for).

I would pay special attention to how things work so that you can transfer and reuse what you've learned across different makes and models even if they're put together differently as well as helping you with future repairs that might share similar components.