I am assuming these are books to study for an exam and you want to surprise your parents with the A+ right??? Ok here's what you do..... Go to the post office and have them HOLD your mail till just past the delivery date of your package. Then go to the post office and pick it and all your other mail up and then cancel the hold. Make double sure that you don't hold the whole residents (the rest of your families) mail though or they'll be on to you.... Make sure you do an "individual hold". Of course you always have the option of changing the delivery address to a friends house that receives packages freely if you know what I mean..... Good luck!