Passed 74-409 today with 800 points!!
It was my first Microsoft exam. 

I have 3 years in IT working with infrastructure and help desk (1 year managing Hyper-V). Had never touched System Center.
Resources I've used:
- The MVA course (watched it like 3 times).
 
- Orin Thomas PDF Veeam guide.
 
- Technet virtual labs (these were great to learn Cluster and System Center).
 
- VMware Workstation (so I could use nested virtualization to test Hyper-V).
 
Had many questions about Ops Manager. The MVA was not good for this topic.
Time studying: 4 weeks of intense study 

Guess I will study for 70-410 now!