Stripe is a way to sign up with your credit card if you don't want to use PayPal. Make sure you have an account on phonelosers.com and that you're logged into it. If you don't have an account, set one up here.
Stripe will ask you to enter a credit card number. Don't worry, I don't have access to your card number. I promise! All of that is handled through Stripe and I hear they're good people.
This is for the Platinum level, billed every 3 months, which gets you access to all all the Hobosodes, YouTube screen credits, and show sponsor credits. You don't get anything extra for giving $120/quarter instead of $60/quarter, but that sure is nice of you.