https://university.mongodb.com/courses/10gen/M101J/2015_March/
The course started on March 17 and runs for another month or so. I came in late and missed the deadline for submitting Week 1 homework but that's fine, it was introductory stuff anyway. Just got done submitting all of Week 2 homeworks. Pretty easy stuff if you practice a bit in the Mongo shell. I just used the shell to complete Homework 2.3 actually.