Do as most of us have... buy seeds and try them.
Best thing to do is to research all the types by description to figure out just what flavor, heat you want anyhow.
Do you want blistering heat or sweet?
Not a good way to start out asking for handouts without even saying what you are looking for.
You could even offer something else in trade, offer to pay postage at least.
Trading seeds is one of the best options of course. I'll be offering up some for trade soon. I'll even be giving away quite a few as well but will start with a trade offer first as I think that is fun and a way to share the joy.
I have even gotten some for free by asking for trades when the generous giver didn't need anything else for their garden. I will be doing the same in return.