I'll echo another comment that a few Youtube videos and off you go. It's pretty easy, I'm a video editing neophyte and thought it was easy to pick up.
The thing about Resolve is: You aren't going to outgrow it. It's easy enough for doing simple edits, but if you want to do fancy stuff with it, it can do it. You won't outgrow it.
That said, I spent a stupid amount of time with performance issues in Resolve. My cameras output H.264 or something, and I'd have to convert it to ProRes to edit, a process that took huge amounts of space and time. This was under Windows. Even with that, performance was still pretty bad. One kids concert video took me around 40 hours of editing to get an hour of final footage.
Prior to that video, my desktop machine did a better job with ProRes, but it got milk spilled on it during the home schooling of 2020.
However, and this isn't a solution that everyone can or should do: Resolve on the new Macbook Pro boxes is amazing and will handle anything I throw at it, without having to go through the hoops of converting to ProRes and the like.