Stochastic Processes Tutor

Hi, I am looking for a tutor for a graduate level stochastic processes course. The course I need tutoring with covers the following topics: - Markov chains (discrete time) - Regenerative and renewal processes - Martingales (discrete time) - Brownian motion I am looking for somebody that has a thorough understanding of these topics. Attached are sample homework assignments to give you and idea of the level of the course. I would be interested in receiving tutoring once a week for 1-2 hours leading up to the final exam on July 20. This would total about 6-8 sessions. I would prefer to do the tutoring using Skype, but I would be willing to consider alternatives. Having video in order to show the steps of how to work through various problems on a piece or paper or whiteboard would be very helpful. The book used for the course is Probability and Random Processes by Geoffrey and Grimmett: http://www.amazon.com/Probability-Random-Processes-Geoffrey-Grimmett/dp/0198572220/ref=sr_1_1?ie=UTF8&qid=1306259621&sr=8-1