Finding the right person will make all the difference in how much you learn. I had a friend that had just completed 3 years at a very good photo school and wanted to work with me through a summer a few years ago, we went out a few times and spent alot of time talking about what she knew and where she wanted to go with photography. She ended up realizing that she couldn't make a living doing it. I felt bad for her as she did have some skills, but had wasted 3 years at school and then just didn't want it. I think approaching a photographer and working around them, you will learn quickly, and in the long run probably enjoy the overall experience. Good luck with this.