Ahoy!
The tripod and ballhead are excellent. Remove the plate from the head (unscrew locking screw and press silver release pin on side), turn over and you'll see a securing screw with a flip-up lever in the centre of the upturned plate. Screw this to your camera body. Then slide body/plate/lens onto the head and press the retaining button on the side of the ballhead and slide into central position. Once there, tighten the locking screw thread to secure plate to ballhead.
Then it's a matter of adjusting to suit yourself in terms of shooting you want to do (they are very senstive to adjustment). Make sure if you're on even ground to screw-out the tripod rubber feet, or if on soil, screw-in to reveal the tripod foot spikes.
It's an extremely sturdy and robust tripod and head. It won't take much to work it out (only a few adjusters), and the height is simply a twist on the rubber grips (there are two for each leg) for full height or intermediate.
I had the full set-up on mine over the weekend and it stood very firm.
EDIT: I see you went for pan/tilt head, in which case the above probably doesn't apply in your case. I went for
this and
this.