First of all, I used to be scared of even looking at the quant questions, but after the first week, I was able to solve more than half of the respective 5lb Arithmetic questions, thanks to Greg.
But, I gave PowerPrep 1 today and got 285. I have 2.5 months for my test and I am on the 2nd week of the 2 months plan. I somehow feel totally lost and scared.
Any specific suggestions on how can I significantly improve my score? Is completing a 2-month plan enough to get at least 315? Or should I look out for other Gregmat materials too?