One quick question is when the USB boots does a menu come up where I can point it to different parts of the OS installed so I can grab files, documents, etc. (hypothetically speaking from my original post if we had a system crash but needed to recover some info off the HDD
It will boot you to the desktop (part way through booting you may be prompted for which keyboard country you want to use - it defaults to USA - the UK option is the one next to so just choose that)
You'll then be taken to a login screen - with 2 user accounts - one is guest and the other is root.
Choose the
guest one and enter the password which is
guest (in lowercase)
When you've logged in you'll be at the Main desktop with your panel (taskbar

) and your main "Start" menu (which is the left-most icon with PC written in the centre)
If you select the "Start" menu and go to
File Tools and then choose
Dolphin (which is the Default File Manager)
You will then be shown the all the "local" folders with Home being the "Daddy "

In the left panel,
if you can't already see your "C HD" select the icon called "
Root"
After selecting
Root, you'll see a long list of folders, one of which will be called
MediaAfter pressing
Media you should then see your "C HD"
If you still can't see it, it means it hasn't "mounted" (i.e. it hasn't become
active - or
loaded is another term for it - which means its not accessible.
You will then need to "mount" it. (very simple to do) but for the time being let's run with this and see how you progress.