Understanding Fundamentals

I used Magoosh only for quant and mostly at the beginning of my study. Magoosh is all about understanding fundamentals. The videos go into great length explaining the logic behind each formula, insisting that we shouldn't just memorize the rules but truly understand how they come about and how to tweak them for different types of questions. Each lesson group is followed by a set of exercises comprising of mostly easy and medium difficulty questions. The videos can take awhile to go through but they are definitely worth it as our understanding of the fundamentals are key to tackling more difficult problems. I start out with Magoosh then come to gmatclub to learn about short cuts and do 700+ level questions. I owe my 760 to Magoosh and therefore highly recommend Magoosh if you are willing to invest time to really learn the material.