The below video, though relatively longwinded, provides some simple, easy to understand advice about studying for the GMAT. We'd prefer if he didn't reference several other GMAT prep options, though because they're not Chicago-based, we have no problem posting on our site.
What we do like, however, is the student's description of how he a) set specific score goals based on his ideal MBA school and then b) worked with a private tutor to understand the major concepts while c) taking a lot of practice tests. You'll notice the MyGuru's 1-1 GMAT test prep package essentially follows the same philosophy - 15 hours of 1-1 tutoring + a test prep book + real practice tests.
We also like his comments about the questionable effectiveness and extremely high prices associated with the major test prep companies like Kaplan.
We hope this video will encourage a few potential students to take this student's general advice and sign up for one of MyGuru's GMAT test prep packages.