Many students find self-study to be difficult and time-consuming. Learning from text can be slow work due to the lack of guidance and need to hunt around multiple materials to answer clarifying questions. For this reason, we recommend going with a classroom-based approach to the PMP, if you can afford it. A classroom experience will afford you the opportunity to ask questions of the instructor and gain an overhead view of the material.
EdWel Programs' PMP certification training boot camp provides excellent instructors (you can read about them here), as well as a PMP-certified coach assigned to you the day you register. We recommend them due to their excellent staff, materials, and support.