Just have to add a plug for Angelus Press in Belize City. While not full service and certainly not in Caye Caulker or AC, they have a wonderul selection of Belize and Central America-centric books about culture, flora, fauna. I always enjoy visiting and often find an interesting read. I visit the store by the water taxi but there is also one at the traffic circle beside the grocery store on the way to the northern highway.