1st, I'm going to assume the clutch is working properly. To get yourself used to using a clutch, start by using a small down hill grade. The key is to slip the clutch when starting out. As you've found dumping the cluth is not allowing you to get started. Slowly give it some gas, while slowly releasing the clutch. The down hill will help as gravity will allow you to get the knack of slipping the clutch. Once you get the feel for it, start at the bottom and go up the grade.
Practice, you'll get it.