Comes With the House
I firmly believe that every home in America built from 1950 on came with a copy of the Better Homes and Gardens cookbook.
I'll usually start with somebody's recipe the first time. After that I tend to substitute things or make it my own. I like the whole process of cooking, from cutting vegetables to even doing the dishes. It's the one time I wish I wasn't on my own. There are only so many dishes you can make that are okay when reheated for coworkers the next day. (Though they don't seem to mind.)