I'm just starting to learn about self-defense techniques, MMA training, etc. Rob RAZOR McCullough's "Ultimate Muay Thai" training DVDs are a solid method for learning proper striking and blocking for both MMA and your own self-protection.
Also enjoying and learning a great deal from Anderson Silva's "For MMA" training series, Bas Rutten's "Big DVDs of Combat" and Duke Roufus series "Muay Thai Full Contact Kickboxing" too.