Question : user with public

IF an user is create with only public role, and nothing else, what all do they get, in terms of access to objects in the database?

Answer : user with public

The public role sets the basic default permissions for all users.

whenever a use is added to SQL Server is automatically assigned to the public role—you don’t need to do anything.
Database roles are applied to an individual database.

More info:
http://articles.techrepublic.com.com/5100-10878_11-1061781.html