Excellent Discrete mathematics for computer scientist tutor for 4 months

Hello, I need a discrete mathematics tutor for six months. This is discrete math for computer scientists, so tutor needs to be extremely knowledgeable in propositional logic, truth tables, forming proofs, mathematical induction, etc,etc. Tutor needs to have an extensive knowledge in this subject manner, a book is recommended for reference. Tutor needs to: Have Google chat downloaded and be able to talk to me from it, not chat Explain concepts and write it down by using Google docs Be patient and passionate about subject manner Can tutor on a weekly basis Help with assignments If your interested for a long term tutoring job then please bid and tell me how much you charge per hour of tutoring work. I will accept bids anywhere from $3-$5 USD per hour tutoring.