DH got me a kindle for Christmas as I'll be going downtown on the train for work more and more this year. I feel like this is a strange question but how do you decide what books to read?

For some context, I used to read a lot before kids and when I used to take the train. But that was about 8 years ago. Since then, I haven't found the time to pick up many books and I have no idea what sort of books I even like anymore. I already use the Libby app for anything I have read but there are just too many choices. Any suggestions on how one would even start the process?

Seems like a such a silly question so I appreciate any suggestions you may have.