In all honesty I doubt that it's very effective or productive to try and use a forum as a 'tutor'. Two concerns come to mind:I think the Critique forum in here is a good venue for that, provided that the OP is ready to see their pictures shredded to pieces
1: Too much is lost in translation in comparison with real-life, face to face contact.
2: You get a lot of input from people who might not have the kind of vision that fits yours, nor is it always possible to get an impression of their body of work and approach, making it difficult to determine whose input to prioritize.
I guess places like Photrio allow at least some level of interaction and comparison. Obviously, it would be better to be mentored by a talented artist than by a random person on the internet, but I guess you get a lot of insight also from the random people in here, and from their comments (which I believe are not *that* random, after all, and always of some value 