Best practices in using fast cache

Question

Hi Team, I dont know how to use the EMC features(fast cache,Compression,Thin Provisioning). We have a New VNX 5300 Block only Array. We made the array up. We have 5 flash drives and 39 SAS drives . I want to know the best practices of EMC for using Fast cache. I am thinking to create a separate pool for this flash drives and the other pool for other 39 SAS drives. This should help the performance . Also need to know if i configure this 5 Flash drives to fast cache, does this mean that this should only be used for fast cache purpose or can can i create any luns out of this pool. Because i am planning to create boot luns from this flash pool. Kindly suggest should i create boot luns from this pool or should i create from different pool.