Since you are getting back into reading, I would recommend borrowing from the library rather than buying books. Unless you know what you like to read right off the bat, you’re going to have a few flops. But that’s reading in general.

As for my own system, I try to borrow library books and buy books equally. There are books that I have a strong feeling I will like, so I buy them. Books I’m not sure I will like but I’m still curious to read, I will borrow from the library.