For black and white especially, there's the upcoming free weekend workshop that Per Volquartz hosts. I had to miss it last year, but it's a definite for me this time. He usually announces it on this list, with details, but the dates are on his site already. I'm just back into 4 X 5 black and white landscape after moving to Rancho Mirage from Tarzana. JTree is fabulous, I've photogged and backpacked there for decades and can't wait to return. The lower sun angles early year help out too, IMO. Best, Todd Foster.

http://www.pervolquartz.com/workshops.html