There is a great blog that I came around recently. Full of educational, marketing and just psychology-related materials for photographers.
Read them, subscribe to their blog. I find it very useful.
+ they have FREE podcasts 3 times a month (related to marketing and education, maybe more, but I’m still listening to them as I type this blog post 🙂
Referrals, white balance, branding, sales and other photography business related topics.
p.s. the best way to listen (from my point of view) is to subscribe to GoingPro podcasts on iTunes 🙂