Hi DNJ
Think of Windows 8 as a Windows Phone that includes an App to run it in Desktop Mode.
The main change when you go into the desktop is the removal of the start button, which along with other changes makes moving from an earlier OS to Windows 8 more difficult than it needs to be.
If you can’t get on with Windows 8, there is a free program called Classic Shell which adds the Start Button so you can use it more like an older OS, (You can choose XP, Vista or Windows 7 menus) although I would try and get used to the way Windows 8 works as it seems this is the way all future Windows OS will go.
Some users have had problems running some of their older software on Windows 8 but most will work in compatibility mode, (It’s also been improved with updates since launch) also there are ways to run XP in a virtual environment just like the Virtual XP that can be downloaded for Windows 7.
You can do a Windows 8 test on your current software and hardware by using the
Windows upgrade assistant which should show up if there will be any problems, and also (If available) how to fix the problems.
Hope this helps
Bill