Click the Log in button at the top of any page on SeatGeek. You will see a pop-up window with the words, "Need a SeatGeek account? Sign up here." Click the link that says "Sign up here" and create an account!
Or, you can simply visit seatgeek.com/#register to create a SeatGeek account.
Note:
When creating a SeatGeek account, you may be asked to verify your phone number which is supported in most countries but not all. Please refer to this article for a list of countries for which SeatGeek is currently unable to support text messages.