Cubase and MIDI drums - Quantize etc

Hi All

I want to start learning to do drums with SD 2 and BFD 3.

what is the best place to learn this? i was browsing the help files but i am looking for some step by step stuff to layer and build drums from my keyboard as well as my roland kit

i have the roland kit going well with help from here and now i want to really learn MIDI, especially drum stuff

just wondering if there are any good youtube videos or something you know of, and then quantize etc in cubase?