I just went to the help file again and couldn't figure it out. It must be too simple for me to see.
If I select points and hit the snap to point, nothing happens. If I do it the other way around, still nothing moves.
I know there is a way to select a couple points and have them snap to a guideline, but can't figure out the exact sequence. I'm noe asking for help with something where I didn't try doing my homework first.
You're confused. "Snap" is a characteristic, actually a set of characteristics, that can be turned on and off and effect cursor movement and only cursor movement. Thus selecting some points and the selecting "Snap To Point" does nothing since snap only effects cursor movement. More specifically, it effects cursor movement when dragging or otherwise positioning an object. When you're positioning something and you have the proper snap selected, when the cursor gets within a predetermined number of pixels from an object or feature to which you've selected to snap, the cursor is moved to that feature, thus the term 'snap'.
For example, drag a guideline onto your work area and select "Snap to Guide". Now draw, say, a rectangle and select it. Grab the rectangle somewhere that will allow you to drag it. Drag the rectangle to the guideline you just made. Notice that when the cursor, not the object, but the cursor, gets close to the guideline it changes shape from arrows to a square gun sight looking thing. This tells you that you're in snap range and if you release the drag or select the point, depending on just what you might be doing, with that gun sight displayed it will be as if the cursor was dead smack on the guide line.
The various snap characteristics are invaluable for precise object positioning, without them you'd be lost. Snapping is so fundamental to drawing packages that it's perfectly understandable why the concept isn't fully explained. It would be like an MSWord manual explaining the alphabet.