use a switch layer?

[rookwings]

I am very new. To help me learn how to use ASP, I am trying some practical experiments. Each avenue I explore has, for me, a dead end. I'm quite aware that my problem is mostly a "vocabulary" one, but, without being able to find a glossary, as such, I am stumbling around on my own.
My immediate problem is that I can't find out how to use a switch layer. I have started on Fiziwig's tutorials, and am stuck on the very first task. It is to draw an eye, and, using a switch layer, get it to turn.
I have drawn the eye, each layer containing a different view, just like his tutorial. I have these three layers inside the switch layer. But then he says, " Then I selected the layer "front" at frames 1, 36, and 72; selected "left" at frame 18, and "right" at frame 54. WHAT? How?
I have spent days trawling tutorials, forums, etc., and I'm quite ready to give up!
To those of you who know the system and the language inside-out, please have patience with me. I have already pm-ed a very kind member regarding another issue I was distracted by in my quest to learn, and I know you can be an understanding bunch when the moon is in the right quarter.... =P
So far, everything I have tried to do has thrown up brick walls to me, so please could someone explain what the tutorial seems to assume I already know?
This will be my first step away from giving up...

[mkelley]

If you simply right-click on the switch layer itself you can select what layer you want. This will put a key for that switch in the timeline.

To cause apparent movement just put a key for one switch, move to another place in the timeline, and put another key there and so forth.

[rookwings]

Wow! You did it in one!
I've actually done something that works, at last!
Thank you so much for that!