First, I recommend USPS as a shipping carrier. They're cheaper. All shipping carriers aren't reliable. They're equal in that department. Depending on the size of your item USPS provides FREE priority mail boxes and envelopes. You can order them online or get them at your local store. When wrapping your package for deliver use strong clear tape. USPS doesn't allow duct tape. Use as much as tape as you can to make sure the item is secure inside. As far as the inside goes, use anything like an air bag or bubble wrap, or foam. I usually don't do this unless the item is delicate. Printing out the label is easy as pie. You can pay with paypal or a debit/credit card. USPS makes this process easy. You just give them the weight, start and finish address, etc nothing too big.