How about a nice British bit of help here?
This sounds to me like you need someone who can not only help you with some of the details, but explain it to you as they work, so you can learn.
If so, I'm your man. My expectation is that once we've agreed the details, I can read over your class diagrams and you explain the areas you are having problem with, and I'll provide you with code and an explanation of how it was done, the thought process involved etc.
I don't expect this to take very long.