Looking for a solid textbook to use as a learning aid.

I'm all over the place in terms of progress - I know next to none of the alphabets, but know disproportionately more vocabulary, since all I've been doing is listening to audio lessons about 20mins a day for the last 3 months.

I tried a few online ones (TextFugu and Memrise) but I can't look at a computer screen for too long without getting headaches.

So basically I'm looking for a set of physical textbooks which I can study and take lessons from. Does anybody know which ones are good, and cover a lot of material in an effective manner?