but if I just do it online, do I still have to print it out and sign it then send it?
No, when you are done just hit " Submit Now " to finish your application. You 'll get a receipt for your online application You can print the receipt and keep for your records .
cool, and can I just take my time and do it carefully?
Will you be taking a very long time per page? you should know that for security reasons there are time limits for viewing each page .You will receive a warning after 25 minutes of inactivity but you can extend your time.