Recently I enrolled in the first section of The Knitting Guild of America Master Knitter course. (read more about it at TKGA.com). Even though I've been knitting for many years I think this will be a real challenge for me. I am thoroughly enjoying the research I've done so far in preparation for knitting the required sixteen swatches, and writing a report on blocking. I'm learning a lot already.
Wish me luck and I'll keep you posted on my progress.