How to help testing. A step by step visual guide. (wiki) (in progress)

Questions I have, for others if they wish and also a note to myself to research further.

Can a user create a virtual hard disk smaller than 50GB? Meaning specific to this testing what is the recommended disk size needed?

When the user has finished with their testing or if they make a mistake or if they give up is getting rid of the partition easy?

Some links I have found so far that may be helpful in creating this guide: