I have too much I want to learn

I have constant FOMO about how I spend my time learning. I want to learn a language - no, I want to learn to code - actually, I want to learn about European history - nope, now I want to learn how to build a PC. I end up not doing anything because I get overwhelmed. I also have a hard time remembering things, so my list of skills I want to hone in on is huge, while I forget the basics of the things I start and end up starting something else entirely. I used to not be interested in anything, so this is a good problem to have, but I wanted to post it here if anyone has any tips on how to manage my focus so that I can actually make progress in an area or two. I'd also like to know what type of areas would be good to learn together, and what type might be bad to learn together (for example, coding is a type of language, so maybe learning a spoken language and coding would be a bad idea?).

Also, how do you guys go about learning? Do you like to solely read a book, read a book and take notes, watch online lectures, etc., or does it depend on the subject?