Well, for workshops you being in Houston, you cant go wrong with taking Clay Harmon's workshop. He is very knowledgeable, has extensive experience with pt/pd in all kinds of papers and developers and he is an all around nice guy. Web site, you can visit Bostick & Sullivan, or www.alternativephotography.com. For books the bible is Dick Arentz's pt & pd printing. He told me he is working on a new edition, so maybe you can get the current one in the library and wait until the other one comes out.
Like you I was bored with my prints and gave pt/pd a shot, I am glad I did!