

Seems like you know what you need to study. I’d suggest searching for the topics and reading. Don’t try to skim, there is a lot to read and learn but it will be worth it, it will open many doors for you. Tutorials in this domain have usually an issue that following a track to achieve something the author can’t really explain everything on the path to the depth because, well, it would be lots of reading anyway and it would end up to be documentation rather than tutorial.
What I tend to do, it may or may not help you, depends on your individual way of learning, is I search for a topic to find some good article. Takes time, but then, usually, after the read I have more things from the article I need to understand more. This sort of branching leads to a good wholesome of a knowledge. In the past I used to skim a lot, which resulted in a lots of trial and error instances, eventually it lead to frustration from not knowing what the heck I was doing. When I realized reading and understanding should not really be skipped/skimmed, I started learning a lot.
I have the first one and its good. Could have a bit better range, I suppose that’s where the 2 comes in, but otherwise very stable and easy to use.