Can you tell me more about the structure of the courses?

Courses start on the first of the month. Each course consists of six modules, each module will take you one week to complete and each course is designed to take you eight weeks to complete.  

How fast you advance is all up to you! It depends on how many hours you can invest every week. You can finish one course in 8 weeks if you invest 15-20 hours, or finish a course in 4 weeks if you invest 35-40 hours.