You should begin preparing for the GMAT one to three months before test day. You may need more time (two to five months) if you have been out of school for some time and need to brush up on material. In general, you should spend at least 50 hours preparing.
There are two main options: GMAT online course or a GMAT class course.
Online courses are an inexpensive way to get started and learn the fundamentals. Online courses are excellent for international students (read more…..