My 2cents …

Very well written online documentation – you should have a look if you are on the DevOps path (see my previous post).

Ops School is a comprehensive program that will help you learn to be an operations engineer. Operations engineers are highly skilled people who manage the computer systems of businesses big and small.

Source: Ops School Curriculum — Ops School Curriculum 0.1 documentation

Quote:

Packer is easy to use and automates the creation of any type of machine image.

packer.io seems to be a very nice and slim tool to do provisioning of VMs for different cloud solution providers. You can also test your VMs locally via VirtualBox or VMWare.