Nouveau Riche University is more than just a fix and flip seminar. They do offer a lot of information you don't even know exists. Now, the truth is that all this information is available elsewhere, but unless you know about it you'll probably never come across it.
Is it worth it?
It depends... real estate investing is not something you do to become a millionaire if you have no prior business experience, which is the case for most people who join. You need to either have money or know where to find money to invest and although Nouveau Riche teaches you many ways to do this, it still falls back on you to take action. Some strategies are more favorable to people who have contacts or prior business experience, but if you don't at least you'll be prepared to take action when you do get there.
My recommendation... don't jump in just because it sound good. Have a plan and know that you could do all of this without Nouveau Riche, but will you?