This is an ancient book of poetry which is primarily aphoristic and philosophical/religious. The book is the foundation of much of Chinese thought. It has given rise to Daoism both the philosophy and the religion. It is however so ambiguous that it needs interpretation. The book does have positive theoretical tendencies which are similar to Buddhism and the Pre-Socratic philosophers. Its the kind of book that should be read because of its extreme importance in Chinese thought. It had tendencies to favour inaction and nonbeing theoretically speaking. It, however, requires a lot of interpretation and is conducive to a lot of nonsensical mystical drivel as well as things of more interest.
It should be read because of its importance, but unless one takes it as a religious text then it is not really a coherent philosophy just in itself.