The Parli Prepbook, a resource created for the NPDA debate community, is available for $10 per electronic copy, and provides comprehensive explanations of debate speeches, arguments, and theories. 

The FV Playbook, a compilation of generic NPDA arguments created by Kehl Van Winkle and Liz Featherton from the University of Oregon, is a useful resource for frontlines and blocks, kritiks, and kritik answers.