We live two blocks from a library and she goes regularly. It’s great on weekends (especially during the winter) - it’s full of kids and it’s a lot of fun.
I like asking people for book, television or even website suggestions. We’ve found some unbelievable gems that way, including a site she uses to ‘wave to the International Space Station.’ :)
Our system (king county library system) is top notch, and their children section is organized with books specific to children development: life events, feelings, bedtime, concepts, etc.
Every two weeks I go and pick out new books, rotating topics.