Cloud Computing

Hi, this is my first post, I have been an IT Support Tech for many years and have now decided to step into the cloud computing world and pursue a career as a Cloud Systems Engineer / Administrator, I’m a novice in Virtualisation and Server Admin and not sure where to begin as I’ve read that I need experience of up to 2 years of working in a data centre as a pre-req. I’m looking at taking a few courses, VMWare and CompTIA Cloud+

I was wondering whether I can get any advice on where to start, courses to look for, recommended on-line training sites etc. I do have Pluralsight at my disposal, so have been looking on there so far.

Also what provider I should concentrate on AWS or Azure.

Any suggestions would be greatly appreciated.