OK, if I purchase the entire package, is there a way to access questions by topic? Like perhaps a links page where I can jump directly to sentence correction, inequalities etc? Due to my schedule its easier for me to print out and work on problems while on the train etc rather than to do it online.
If you want to attack problems by topic, you might like Jeff Sackman
's problem sets: http://www.gmatproblems.com/
I recently purchased his Extreme Challenge and Word Problem Challenge sets, but I haven't had a chance to try them yet.
Be forewarned, these sets are not cheap.