If you need access to support for a product:

Please have your site administrator follow the steps in this article: How do I invite (add) a user to Blackbaud.com?

If you do not need access to support:

1. Go to Blackbaud.com.
2. Select "Sign in" in the upper right hand corner of the page.
3. Select "Don't have a Blackbaud ID? Create a new one."
4. Fill in required information. 
5. Select "Sign up"
6. When the confirmation email is received click "Confirm email."
User-added image
7. Sign in with credentials.