To get the © symbol, do Alt+0169. (That is, hold down Alt and hit 0169 on the number pad.)
I don't bother with making a brush/stamp as my photographs can vary in size and I always want my name to be clear and sharp. I find that simply typing it in with the text tool is the best way. Saves fussing around with the more technical methods too.
Just my 2c for anyone who wants options.