One month? Mine is tomorrow!
For me, it was the collision and Newton's law problems, actually, that I would get stuck on, so I've been doing lots of problems out of Young & Freedman on momentum, energy, collisions, torque, etc. Sign conventions for optics also get me a lot, so I've been reviewing that. Fluid flow came up on the most recent practice test, so know a little bit about that. I actually have six pages of equations written out: statistical mechanics and thermo (I actually saved this from the class), E&M, Classical Mechanics, Optics, Relativity, and Atomic.