Not a waste of out time. I know my camera pretty good and I end up looking something up in the manual at least once a week. I have a copy of it on my desktop so I can find it quick.
I had the same difficulty trying to locate the info in the manual that I Googled it instead. The AF-S and AF-C settings sure are different than my D90!
Under the lens, it looks like a little switch with a button in the middle. Hit it, and slide the dial front and back to switch between focusing menus. Or... uh... check the manual.. haha. I'll follow the trend