(This generalizes much farther than artists.)
I mean that you have neither a contract *nor even an understanding among equals* that the terms you currently enjoy are the ones you will have in the future. Businesses sign contracts with vendors important to them.
Any term you think you're entitled to is going to be renegotiated by Darth Vader: "I have altered the deal; pray I do not alter it further."
1) You want your own place on the Internet; I think that is, for most people, a website.
2) You need, need, need an email list. Software for them is cheap to get started with.
3) Above all things: