Quick consultation on building Rails app

I am a novice Ruby on Rails programmer (been learning for 3 months) building my own web application, essentially an auction-based marketplace. A hypothetical example: connecting students and tutors. A student posts that he needs help in math, and a math tutor near his location bids on the job. At the end of the auction, the student picks the winner. I am looking for an experienced RoR programmer to talk with me through some of the back end logic via messaging (Gchat or Skype). Note: I am not asking you to read/write code or debug any code; I just need someone to guide me on setting up the general problem. Most of this will focus on creating the right models and associations, as well as extracting the results off the database efficiently. I don't anticipate this taking more than an hour or so, and repeat business may be possible as I build the app. Since communication is vital, please only bid if you have excellent English (native speaker preferred). In your bid, please state your general experience with RoR. Thanks for your time all!