If you missed the latest Kickstarter campaign for Volume 3, you can still get Volume 1 and 2 today or wait until Volume 3 is finished and get it at comic con events or through the website.
If you would like to get Vol 1 and 2 TODAY you have two options:
order it here (printed version. Volume 1 and 2 only currently)
or also on AMAZON. (digital version)