Well, it is really very, very easy! It depends what you are after. If you have an idea in mind let me know and I'll see if I can write instructions up. I'm working on some new crochet jewelry designs at the moment so you'd be doing me a favor!!
A very simple beaded necklace can be made by stringing your yarn with beads before starting and then simply making a loooooong chain, dropping a bead in between each stitch, either at regular intervals or randomly. Continue going until the chain is long enough. I would either then join the ends and just wrapping it around my neck, or attaching it to a necklace fastening.
Try any irish crochet type motif. These earring were made using an Irish Crochet inspired motif. The instructions can be found in the BellaOnline Crochet 'Projects' section - or by clicking crochet earrings
Let us know how you get on!!