No workshops (though I think I would really enjoy them), no schooling, no courses except one minor online course... I did take the beginner photography course from Proud Photography, but to be honest, I did all but the last assignment within a few days and delayed doing the last assignment becuase I was going on vacation. It did not directly teach me anything new... it did reinforce a LOT for me and let me know where I was. I enjoyed it.
I did purchase several DVD workshops (Dean Collins, Zack Arias, Lynda.com LR2 and CS4, Perfect Exposure, Perfect Composition, etc...) and found them amazing, but again mostly nothing was new, just reinforcements of concepts that I already was quite familiar with. Nice to know that I am on track for where I think is the right way for me.
Self-education via books, the internet (strobist.com is a biggie and my photography library just hit over 20 books)), real life experience, participating with other photographers and being in the strobist group are the places I learn the most from.