At Learn & Color Books, we want our coloring books not only to provide relaxation and stress relief, but also mental stimulation and a great learning experience. Adult Books for Relaxation Our adult coloring books are rated G and are intended to help relax you. These books do not contain the learning aspect that our other books contain. Adult Books for Hobbies Our hobbies coloring books are great for increasing your knowledge around a hobby or topic such as medicinal herbs, freshwater fish, tree identification, etc. Adult/Youth Books for Learning Our learning coloring books are great for increasing your knowledge about educational topics such as historical figures, historical events, geography, etc. We are very excited about our newest addition: Color Thru History