It wouldn't be a bad idea to somehow include in the IntCk title that you're looking for GMing aid.

If nothing else, you could always ask people here or similarly about help if you're unsure about something. While not all will have time to help you full-out with the actual GMing, they can help you with specific situations. 

Your problem, if we understand correctly, is that you're not too good with the source material. Do you consider yourself passable as a GM in general, or is the help you need two-fold?

If it is just the source material (and not the art of GMing), then maybe what you're looking for is just as much someone that can act as a "loremaster"?