The main study material I used was from vBrownBag from youtube they have about 10 videos covering this. It is for vsphere 6 but all of it is still relevant. Watch it twice.

https://www.youtube.com/watch?v=vgKTiWvKGM4&list=PL2rC-8e38bUXAB-VaBem953POgFDrk-Iw

The other material I used following the below links

1.

2.

3.

Really spend time on the below

Conceptual, Logical and Physical designs
Requirements
Constraints
Assumptions
Risks
Functional requirements
Non-functional requirements
Availability
Manageability
Performance
Recoverability
Security

https://communities.vmware.com/wbsdv95928/attachments/wbsdv95928/5506/5113/2/Functional_versus_Non_Functional_Require.pdf

Enjoy I hope this helps and good luck

By Kader