Some wonderful SCA scribes just started a Facebook group called the SCA Calligraphy Boot Camp. [Added 8/18:] For those of you who aren't on Facebook, they created a website as well.
Each month, they are going to select a calligraphic hand or skill to focus on. Each participant is asked to keep a notebook of the projects they complete.
If you want to work on your calligraphy, please join me in participating.
I've added a link to this and other Facebook groups to my Resources page.