It’s really simple.
Just connect to your Karma Go and a popup will appear asking you to log in with the username and password you created at purchase. If you don’t have a Karma account yet, don’t freak out, we’ll prompt you to create one.
If the popup doesn’t appear for some reason, head over to your browser and enter: http://hotspot.yourkarma.com into the address bar. You should then get the prompt to log in from there.
There’s also plenty of good info to help you out on our start page.