How to put trucks on a deck

First of all, trucks in this case are the two metal things holding the wheels in place. And the deck is the piece of wood you stand on.

The first thing to putting trucks on a deck is you need some tools. You need a wrench and a screwdriver. When you have those tools you can start. First, you place the trucks on the bottom of the skateboard. Secondly, you put screw through the holes in the deck, and the holes in the trucks. Third, you place the bolts over the screw, and tighten just about as far as they can go. It's really your choice how tight your bolts are though, so have them at a comfortable tightness. That's really all there is to it, and just do the same thing to the other truck. You want to have the trucks at the same tightness though. Be aware of that.

Just a pointer:

If you like doing lots of tricks, you should have your trucks tight. If you just like riding around, have them a little looser. If you like doing both, have them somewhere in between.