Fellow general homebody here! Based off your interest in books, I'd suggest checking out the Institute Library downtown. They have a lot of events.

Neverending Books is funky and also has events.

There's a local sci-fi and fantasy book club listed on Meetup that appears to be active.

I also suggest browsing local meetups (previous link) in general. That's how I met a lot of my friends here. It was for an activity I'd never done before. I was nervous but ended up meeting a lot of great people, many of whom I've now been friends with for years.