As a GMAT tutor, I will say that there are certain times when you can get the most value:
1) Making a study plan
2) GMAT specific questions - people often get tutors too early and don't have the basic Math skills
3) GMAT exam strategies
I would advise against spending a lot of time with a GMAT tutor if you are still in the early stages. Get online Math lessons or a cheaper math tutor.
If my response helps, please add throw me a kudos.
Jim Kernan is the Director of GMAT Operations at Stratus Prep and author of GMAT Materials for GMAT Prepster.