Excellent, you're doing great!
Well, "
snap" is literally symbolized as a magnet, hehe.
If you go into the menu bar "Settings", the first entry is "Show Snap-Button". It will bring up a little magnet on the bottom left, next to the zoom buttons. Normally you don't need that button, because you can just use the "right mouse button" (or secondary mouse button) to activate the
snap feature on the fly. Olivera does almost everything with the right mouse button because of that, haha, but there are times when you don't need it or actually don't want it.
Anyway, WR is designed to let you work as fluently as possible without having to jump around on the interface too much, if you don't have to. That's also why virtually no features are "hidden" or buried in layers of sub-menus or the likes. Having something like an instant snap by using the right mouse button as well as such a universal snap as ours enables you to do great many complex maneuvers without having to worry about anything but your pattern.
Have a look at my videos for you again and look at the little mouse. You will see when I use the right mouse button rather than the left. It is kind of the key to working with WR.
Depending on what kind of mouse you use with your mac, you may have to use two fingers on their curious touch-mouse to tell the mac you're pressing the right/secondary mouse button.
I'm writing so much here, because it really is such an important understanding. Once you master this, you will fly through your constructions with much less effort. It's very, very powerful.
On top of that, when you snap to any line, curve, arc or circle to create a new line or curve, you can hold shift to lock the direction in various ways, instantly getting right angles or extending along the direction of the line or curve where you have snapped to.
Check out the little
Line Tutorial again to see what I mean, or the
Bezier Curve Tutorial.