I'll be available at the IS TAs room at the following dates to answer your DWH questions:
Thursday 4/6/2015 from 11 AM to 2 PM
Saturday 6/6/2015 from 2 PM to 5 PM
I am sorry that I won't be able to solve exams with you, or answer questions related to the lectures. I can only help you if it is a lab-related question, otherwise you will have to ask the doctor directly.
Mohamed M. Hafez