It really is quite easy to make candles....you can even use various household pots, etc, such as good yoghurt pots, denture tablet containers, and I quite like the cheap screwball ice cream containers, which are tapered. Pirce the bottom of the pot. You do need the tight sized wick for the thickness of the candle though, and I don't know any 'shops' that sell wick, so you really need to order that on line.
Melt the wax in a metal bowl over a saucepan of simmering water, and dip the wick in it. Carefully wipe the excess wax off the wick with your finger and thumb.....maybe waiting a few minutes as it is very hot.
Thread the wick through the hole and secure with bluetac, and secure the other end in the middle of the open end of the vessel, by wrapping around a cocktail stick.
Pour in the liquid wax and leave to set. A short spell in the freezer can help the candle out of plastic containers or you can spray with silicon spray prior to putting the wax in. I don't think it helps to put metal moulds in the freezer though!
I think that is about it, although someone will no doubt add a bit more if I have forgotten anything! Cut your wicks longer than the mould, so that they stick out at both ends. I made some wax polish today...a very simple recipe, but it is doing a good job polishing wood.