Simple to use, once you get used to OS X, as it is different from Windows. Not difficult. Different.
No touch screen. In fact, most people prefer you don't touch their screens.
If it's for school, find out if the school has any application requirements that might help determine which one to get.
Battery life and charge time should be on par with most Windows-based laptops, although YMMV depending on usage patterns.
It's quite user friendly. You should head out to an Apple Store to check on out.