Jiu Jitsu University is phenomenal, I can't recommend it enough. He teaches some slightly unorthodox techniques that you don't see too often at most BJJ schools but it's all very effective and he hits everything you can think of. Also, Big Nog's guard book for mma is excellent, it's geared for mma but the techniques and concepts apply to pure BJJ as well.
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Member of DaJoGen MMA school under Dave Hagen and Team Chaos fight team under Denver Mangiyatan and Chris Toquero, ran out of Zanshin Martial Arts in Salem Oregon: http://www.zanshinarts.org/Home.aspx,