I took a few photography courses in college. I'd been working "under the table" since high school, so I figured it couldn't hurt.
Even after I had thirty year's experience as a working photographer, I still took a couple of workshops. Especially valuable were the Photoshop workshops, even though I'm a computer engineer on the side.
Since I caught the start of the digital tsunami, I made some money calibrating other photogrphers' screens, and building paper profiles for them. Paid for a Monaco Optix and EZ Color.
Never pass up a chance to learn. I still experiment a lot in the studio, I like to find new ways of using light. Besides, I get to goof off and pretend it's work!!