After reading the books of all religions, known to some of their followers and have practiced some; those which I like most are Taoism and Buddhism.
Taoism is based on return to a simple life, in touch with nature, animals, trees. Three precepts are important: charity (giving to others), live a simple life (not need much) and not try to be number one (be humble).
An excellent book that summarizes Taoism; which not only speaks of philosophy, but shows some forms of meditation, medicine, examples of poetry, etc.