2. FIRST THINGS FIRST
There are basically two operating systems for the personal computer.
Mac
PC
We are going to be working strictly with the PC platform, which operates on the
WINDOWS System Software.
WINDOWS itself has a variety of operating systems available. The basic principles are
all the same, however the look and feel of them will vary.
Windows XP
Vista
Windows 7
Others

3. HOW DO I KNOW WHAT I’M RUNNING?
When you first turn on your computer, you may notice a startup screen that will tell
you what operating system you are running.
If you missed that, once your computer is on, you click on your START button, usually
found in the bottom left of your screen.
Then navigate the menu options to Computer -> System Properties -> and you’ll see
something like this.