Resources for Singers:
Angel Diva Music
http://www.angeldivamusic.com/Products_ArtistDevelopmentGuide.php
Jan Linder-Koda is an award winning singer-songwriter, producer, actress, and artist developer based out of LA. I LOVE her and her philosophy and performance techniques. She has some fantastic resources on her site, especially her book "Once More with Feeling" and the accompanying DVD. Check it out.
River of Suck Podcast
www.riverofsuck.com
"You have to suck at something before you can be good at it. River of Suck is real-talk about struggles with confidence, self-doubt and becoming the youest you. Host Andy Reiner and guests ranging from musicians to scientists parse tough questions about maintaining a healthy attitude in the face of impossible obstacles to the tune of bespoke music."