As achow101 said, you just transfer it as a normal bitcoin transaction. Do remember to pay a sufficient fee, and
click the RBF checkbox, so you can bump the fee in case you mess up and send with too low a fee.
Now it a good time to do what every new bitcoiner should do with a new wallet: Experiment! Most important, send a small transaction to your offline wallet, and once it has confirmed
send it back to your online wallet, just to check that you are able to sign offline correctly. Send a few transactions back and forth. At the end of the day, you will have spend 1-10$ on fees, but you will have learned enough to avoid far more expensive mistakes in the future
