Casio FX 9750GPlus-Graphing-Calculator- How do you do simple operations/navigate?

land_of_ice

Any one have this particular graphing calculator, and know any facts on how to navigate from the screens when it is first turned on , and which buttons should be pressed to do simple basic hings with this calculator that one would find handy such as adding, maybe using exponents with it, finding roots, etc

for example, as you can see from the picture below, the menu as soon as you turn it on, comes on with so many different things on the screen, to start, simply which screen do you select just if you want to add or something, or subtract, maybe use some exponents and these sort of things?
http://www.wantitall.co.za/images/Sh...1VEJG7HMJL.jpg