I tried my best, spend 20 minutes going back and forth through midjourney and discord. I read the getting started on discord and when I tried to use it discord told me I need a subscription, and I clicked the link for the subscription (which took me back to the main midjourney page), and signed up for the beta, and same thing. At this point I don't know what it wants. Guess I'll try it again down the road...
Discussion
Just on the odd chance that anyone else gets as lost as me, the page to get a subscription is on your account page here: https://www.midjourney.com/account/
Not sure why it kept taking me back to their main page, but they had a get started page that let to quick start page, that led to docs, that led to the account page!
Looks like they don't have a trial or free sub at this point, so I may just try it for a month for $10...