Sending money home is quite easy to arrange. Wire services can transfer money directly into your home bank account. You will need all of your home bank account information including account number, branch number, and the bank address. You should contact your bank to see if they charge a fee for receiving this money (some banks do, usually around $20).
When you wire money from Korea, you will need to bring your ID with you and the fee for wiring the money. The fee for sending this is around 15,000 won.