The hair was part of the render. There was no postwork on this.
I'm not sure what you mean by "is POV hard to use/learn."
Depending on how much RAM your computer has, something like this can take anywhere from several minutes (such as mine did: approx 30 min, I believe it was, maybe less) to several hours... maybe even days if your computer is really old. My laptop has 2GB of RAM, so things render fairly fast for me.