the tao of pooh, the te of piglet, someone loaned me the first and i bought the second great intro to the tao
From my bookshelf I can recommend books like: Man’s Search for Meaning by Viktor Frankl, Nature and Selected Essays by Ralph Waldo Emerson, and Meditations by Marcus Aurelius. They are actually very readable even if you dont know nothing about the subcject and typical philosophical language bothers you.