Look into the programs and find one that offers more strategies than actually legal knowledge. Knowledgewise, what everyone said is true, you'll either be on the same footing by week 3 or 4, or you'll be at a disadvantage if you learn too strongly the oversimplied stuff they teach in these courses. So don't expect to get a leg up knowledge wise. But if they can give you study methods, outlining methods, exam taking tips that you can buy into, then it won't be a toal waste of money.
When people say that these courses are total wastes of money, I think it's becuase there's little correlation between going to these courses and doing well, because a given person doesn't necessarily need to go. But exam taking is all about comfort and confidence, so if you feel like you need to do this, then you're helping yourself, at least a little bit, by indulging yourself.