Well, for a first try the easiest is to make beaded jewelry. There are different kinds of jewelry, but this is definitely easiest to make.
Visit your local Hobby shop to see what they have. I don't know what kind of jewelry you like. But for instance if you want to make something like this (it is not mine, I found it online):

You only need plastic string (flexible and strong, there are different types so be careful, more expensive isn't always the better). You will need this (I don't know how it is called in English):

It is used to grab the end of your string and it has a small loop where you hook buckle (and two small rings to connect buckle and string end). You can do it without it, but it can get loose and fall apart if you just knot it to the buckle.
Everything else is optional. Don't use plastic beads, instead them use glass, it looks much better.

You can use wood, iron, glass, all kinds of natural materials, half precious stones, feathers... Almost every hobby shop has them, so just use your imagination.
