<p>Firstly you mention expense. Is this an issue for you? Rather than take a course you might be just as wise to take some diagnostic practice exams and see how you do. Once you determine the area you need to work on purchase a few hours of private tutoring and make the most of your time & money. Review classes teach to the mean, take up a lot of time, cost about the same as some strategic help from a tutor. Good luck. Diagnostic exams are free basically.</p>