If books are still in good condition, donate to a used bookstore, thrift store or community rummage sale. The Gifford Thrift store will take books as long as they are not reference books (encyclopedias, bibles, etc).
You may also check in with hospitals, nursing homes etc. ReStore in Barre takes books for reuse – 802-477-7800
Unusable paperbacks and magazines can go in regular recycling while hardcovers go into the trash if they are not repurposed in another one of the above avenues. You can remove the covers and place the pages in recycling.