Hopefully you’ve checked out the Baltimore Book Thing before, but if you haven’t, you really should! Basically, it’s a huge space where you can both donate books you’re finished with them and take any books from the space that you like for free! There’s always something interesting, the books are organized by subject matter, and it’s definitely a project that you should help support! Visit their website for more information and to learn how to get involved. Their hours for browsing are 9 a.m. to 6 p.m. on Saturdays and Sundays.