Hello. I remember in ut2004 there was a map called FnG-TrainingGrounds or something of the like. That map could be played without bots (using a UTComp mutator) and you could just pick up ammo (there were loads and loads) and head to special rooms in the map each tailored to help you train your skill in various areas. There was a place with moving "targets" where you could practice your Lighting Gun, a big room with many moving platforms that you could use to train your ability to hit shock combos while moving, etc.
Is there such a similar map out there for UT3? If not someone could perhaps work on it! It doesnt have to be very pretty just to do its job. In fact if its simpler it will make it a better training map due to fps. Or maybe there are other maps out there that are particularly suited for training: for instance I read someone was making a TDM map where the 2 teams were on 2 opposite areas of the map -I guess unconnected- with some cover here and there making it an essential practice for long range weapons. But that one is in the works.