See if you can get a copy of Pete Wright's From Emotions to Advocacy from the library. I think that book is good prep for advocacy.

As for his seminar, don't get your hopes too high. I went to one this summer and found it lacking. He spent the whole time telling you how to read his book and how to highlight it. Ugh! One caveat, I'm an attorney so my expectations for something that earns me CLE credit are a lot higher. It might be more helpful to non-legal folks.