I've learned the art of digital scrapbooking. I would even like to say that I'm good at it, though I think I'm still finding my style, as I like to try different things. I think that's validated by having been asked to be on the design team for PeppermintCreative.com. I picked up many scrapbook things over the years, but never really did anything with it, and then discovered digital. I fell in love. It's a great creative outlet, and also a way to preserve memories.
You can see a progression of my abilities, with some before and afters.
So, this is ONE thing I've learned out of the many, many, many things I've learned in my 35 years on this earth. How about you?