I don't remember exactly, but I think its been around 6 years ish.
I taught myself using a Klutz® book we had laying around (same with crochet), along with a knitting kit we got from a craft store.
I also love cabling, its just so gorgeous! I also like using dp/circular needles (if that counts).
I also dislike unraveling rows, or rather, I dislike putting all the stitches back on the needles, since I usually put some of them on backwards-despite my best attempts. Likewise, I dislike casting on/binding off.
A baby blanket for my niece (I actually made it a few years ago, but I figured between all of my siblings I'd eventually have someone to give it to. ). It took forever, but turned out fairly well. Of something I didn't give away, I have no idea...