I found Law School Confidential to be a waste of money. All it really offers is common sense advice like "Eat Healthy", "Get enought sleep", etc. The one thing that sticks out at me now a month after finishing it is his number one piece of advice (what he calls the best advice he can give you, more important than any book): a good bed.
Wow, thanks! Now I know why I haven't been doing well in school up until now. It's all due to the broken glass and shards of volcanic rock that I sleep on at night.
In my humble opinion, it is just another way to make a buck off naive prelaws.