i heard of the question banks but which ones are there? sat suite, or princeton review or what online resources?

where is the chatgpt prompt that generates questions and the AI tool for giving questions and it will explain it?

just watched the video, but am struggling to get a good understanding of transitions. where is the quizlet and such resources?

Honestly, I'm confused on where to start. I feel like I may be underestimating the whole thing but as it stands right now, there are quite a few math and grammar concepts I just have never learned, my score is pretty low right now but I think it will go up a bunch once I learn everything. Are others on the same path of learning and then practicing? Once I learn concepts for the first time, how much practice should I do? Where can I learn them?

I have a book from Princeton Review, but is it worthwhile? I feel like sometimes I am just wasting time so I don't really know.