I'd say get stuck in to the books. I'm at university so have lots of studying etc to do myself. I can't stand looking at books outside of coursework but I found the PPL books a LOT more interesting than anything I've studied for before. If you get stuck on something ask your instructor or somebody on here. You already have the books so it won't cost any more money. I'm still working towards my PPL but done all the ground exams in summer. I spent a week on each exam (while teaching myself some guitar and exercising my elbow on one or two nights out) and that seemed to do the trick. Take some time, grit your teeth, and get stuck in.
All the best
