In reply to deeview:
> any t'internet links around?
There are some things - not many, I admit, but a few, which are best demonstrated in real life.....
Can an internet page really show you the infinate variety of gear placements and directional forces which make up individual belays?
That is probably why there are so few good sites.
Here are some (not very good) ones! I think you could do with more pictures!
http://www.planetfear.com/article_detail.asp?a_id=142
http://www.thebmc.co.uk/Feature.aspx?id=1888
http://www.coolsportz.com/traditional-leading/default.htm
You don't very often find bolts at the top - that person was just teasing.
Put in a minimum of 2 anchors - I usually put in 3.
Make sure that each anchor is independant - that if one of the other anchors failed, it would not affect the other anchors. So each anchor has its own bit of rope, tied off at both ends.
Make sure that the anchors are pointing in the direction that the pull will come from if the person falls off. Don't put an angle into the ropes, by having your body higher than the anchors. If the person falls, the force will pull you downwards.
Make sure that all the anchors are in tension, with no slack on any of them.
Make sure that the rock that you put the anchors in is sound. Rock at the top of climbs can often be more crumbly and loose than on the climb itself.
Make sure that you will be in a comfy position, without the rope running over your leg or anything. If possible, be in a position where you can see your second as they climb.
Like someone else said, practice setting up a belay BEFORE you lead a climb. Do it at the bottom of the crag, and get someone more experienced to glance over it for you....