Getting started in BIM 360 Plan begins when you receive an email invitation to join a BIM 360 Plan project.
As a collaborator, you first receive an email invitation from an organization such as a general contractor, engineering firm, or owner organization. From this invitation, sign in to your BIM 360 account using your Autodesk ID, which is a combination of your username and password. This ID gives you single-sign-in access to multiple Autodesk sites.
If the user name is already in use or the ID is associated with your email address, you are prompted to try again. To verify credentials or reset your password, go to http://accounts.autodesk.com.