@paulgutteridge:
Happy to be able to help re photo sizing, the small file limit on this forum is a challenge without a tool like RoboSizer.
The rig is the most common type - a Bermuda or sloop rig, consisting of two sails, a mainsail (the aft sail) and a self-tacking jib (the foresail).
The setup you have looks to be very well made and the rigging and the sails look like good quality materials.
From the look of it, everything is put together correctly. To get the boat sailing Ok, the sails will need some adjustment, it all looks a bit tight to me.... When not using the boat, let the tensions off a bit to avoid creasing the sails, also leave the hatch open so the boat is nice and dry inside. (Make sure you seal that hatch up before you go sailing!!! White electrical tape around a flat lid or some sticky back would do the job and look Ok)
Here is a link to a video that is a good primer on sail tuning, it will get you started. The boat in the video has lots of adjusters, but you can achieve all the adjustments with the adjusters you have available. Do the adjustments in the recommended order.
http://www.youtube.com/watch?feature=player_detailpage&v=5JaeKpDvMl8Also another one here, a bit long winded, but some good stuff in it...'
[EDIT - this second video relates more to construction than sail setting]
http://www.youtube.com/watch?feature=player_detailpage&v=TybDkWjawkc