Steven Pressfield's "War Of Art"  - keeps the demons at bay.

 "The Ultimate Scene & Monologue Sourcebook" by Ed Hooks- a great place to look for material.

A Sense of Direction by William Ball- written for directors- Chapter 5  is essential for actors. He lays out the subject of objectives in a cogent, digestible & most importantly, useable way. Available @ library.

If I've told you to work on your voice, this is who I've told you to turn to:  www.corffvoice.com. Website has good info. Use his CD's to warm up in the car before auditions.

Some prespective on agent hunting & the care & feeding of same:  Tony Martinez's An Agent Tells All. Available @ library.