I was given access to someone else's account. Do I have my own?

No. When someone gives you access to their account, you get a Podspun login and you work in their account with the role they gave you. No account of your own is created, so there is nothing of yours to set up or pay for. If you signed up for Podspun yourself before being given access, you keep the account you signed up with.

You can start your own account at any time. Open User Profile and select Start my own account, or use Add new account on Accounts. Give it a name and you are taken into it as its owner. It has its own channels, websites and billing, and the account menu switches between it and the accounts you were given.