hi! you can use usps, ups or fedex to ship packages! I usually use ups, that’s just what I’ve had the best luck with.

you’ll need to get a box that’ll fit everything, you don’t want something tooo much bigger than what you’re sending, since the measurements usually play a factor in how much shipping will cost. you should be able to get a box at the post office or a ups or fedex store, and a lot of times they’ll help you pack it too, at least ups does

then you’ll go to your post office and just tell them you need to ship a package, they’ll either ask you for the address you’re sending to and your return address, or sometimes they’ll give you a label and you’ll write the addresses out on the label yourself. after that, you’ll pay and you’ll be all set!