Here are the quick answers: the main IDE used in the course is Eclipse. There are no excercises but there are extensive lesson notes for each module.
Finally - the Starter class (the first 3 courses) is about 3 hours long. The Intermediate class will be of similar length and so will be the Master class. So - in total - 9 hours of material.
Hope that answers your questions but feel free to ping me with any new ones.