Not sure if you'll be checking here, but . . . I grew up in New Mexico and chili was as much an ordinary staple as flour or sugar! As for what to do with it . . . hopefully you froze what you bought. Medium/Hot is pretty intense for a "beginner." There are many dishes that can be made using chili. Last night I made green chili stew. I also make flat enchiladas with it (preparing it with meat, onion, cumin, oregano, garlic, salt, water or broth). Growing up, when we had hamburgers or hot dogs we'd take out a package and chop it up to put on our burgers or dogs (just chop it up and put it on!), I put it (just chopped up by itself) in omlets, scrambled eggs, etc. If I make basted, poached or fried eggs, I like a bit chopped up and put on top, too. Another idea is to grill some chicken and put a bit of chopped up chili on top then sprinkle it with cheddar cheese. You can do the same with steak (just maybe not the filet mignon!). I also like to press garlic into chopped up chili (we love garlic around our house) and use as above. If you need recipes, please feel free to email me (I don't know if my email address will show up anywhere, but if not, just reply to my post (reply) and I would be happy to give it to you. I moved away from NM about 4 1/2 years ago and Hatch Green Chili is one of the things I miss most about Albuquerque in the Fall!!
(That and the Balloon Fiesta!) As was said below, it can be used in guacamole as well. You can also try it in salsa instead of jalepenos.
I mostly just make up my recipes as I go, but I do have several cookbooks with recipes so let me know!! Enjoy!!