Pectin is basically something that is in a lot of fruits and it makes jams set! Don't worry too much about it, asif the fruit you have doesn't have enough to set the jam or jelly, you can either add a fruit that does (apple, or citrus peel) to the mix, or buy concentrated pectin from somewhere like Lakeland (I daresay the jam and jelly website also sells it?!)
You will need either a large heavy bottomed saucepan or a conserve pot (I use the one they sell at Lakeland) and a wooden spoon! a metal funnel and a straining bag (or a bit of clean net curtain) are also useful. Its often hit and miss making it, but make sure all your jars are sterilised well first so the jam keeps. You can do this in a water bath, microwave or in the oven - jars have to be hot when you pour the jam or they may break! Loads of info available on the net and recipes. Good luck.