Starting a Mastodon instance

Step 1
Choose a plan from the pricing page.
Step 2
Fill out the form with the domain/subdomain you want to use and your email address.
Step 3
Follow the link to make the payment via PayPal.
After the payment is received
Email 1
If you chose to use your own domain/subdomain you will get an email with the DNS configuration instructions. If not, you will only get the second email.
Email 2
You will get an email informing you that your instance is ready and asking you to create an account and indicate the username to make admin.
That's it!

Notice: during the night in Western European Time (WET) the install will only start the next morning.