I am doing a reading course this semester on Geometric Group Theory. I have been following A Course on Geometric Group Theory by Bowditch. The professor who is guiding me is not aware of good textbooks on Geometric Group Theory. I am looking for a supplement to Bowditch's book.
Initially I began reading the book Groups, Graphs and Trees: An Introduction to the Geometry of Infinite Groups by John Meier. Although this is a nicely written book, I found its approach (and the professor I am reading under agreed) too combinatorial. Could someone suggest sources, especially ones that develop the theory of hyperbolic groups and the related machinery in a self contained manner?
I should mention that I do not have command over French or Russian, so sources should be in English.