PSB Test Troubles...

Okay, so I'm currently trying my damnedest to get into Nursing School for an LPN program. I've already taken the PSB once and failed. This shocked me because I've never really failed a test in my life. But anyway, my scores varried in sections between extremely high and extremely low. I did great on the verbal, arithmatic, science, and whatever that section was about your personality, however I did horrible on the non-verbal, spelling, and the practical nursing sections. I was just wondering if anyone could help me figure out which study guides or books I should get to help me pass when I go for my second attempt. I'm extremely worried about failing again since i really don't want to have to wit another year to start my career. Please Help!!! Thanks!!