I would go over one of the
MGMAT books (for example, Number Properties) chapter by chapter and do the corresponding problems in the OG. I moved through the
MGMAT books with this method and I feel that provided me with the foundation I needed for Quant. For verbal, I used
MGMAT Sentence Correction. I bought Manhattan's RC and CR books but didn't use them. Utilize this site for additional practice problems. Tremendous amount of questions on here
I studied from May til August for my first attempt (580: Q38, V31). Leading up to my second attempt (August and September) I focused on time and stress management. These two factors killed me during my first attempt.
Overall Prep Time: 3.5 months, 2hrs on weekdays, 4hrs/day weekends