These are some great ideas, everyone. Thank you very much! I am going to look some of the suggestions up.

I've not been specific about what I'm looking for because I'm trying to identify resources in a number of areas. I think CBT and DBT workbooks would be of interest (I know little about practical exercises that accompany these approaches), mindfulness, stress reduction, dealing with anxiety, dealing with feelings that seem overwhelming, dealing with social phobia.

Also, a particular interest I haven't seen workbooks or exercises on is helping those who don't know they have feelings learn that they have them, learn to express them, etc. I've heard one way to start is doing a body scan guided meditation. Looking for other ideas on this..