You can fill out the form and they'll give you a "join code" that will allow you to have the testing done at a discounted price.
Being accepted into an existing project is the least expensive way to have the testing done. I'm paying to have the 59 marker test done for Uncle Bill, but you might want to start with the 12 marker test, as it's much cheaper.
They'll send you a kit and instructions. You'll need to sign the release form if you want us to be able to share results.
By the way, my e-mail is firstname.lastname@example.org if you want to contact me directly.