Adding user privileges to an ASP.NET web application -

i'm creating web application manage text books. there 1 person can add, remove, or edit existing items in database. first ever asp.net web app , i've researched edit privileges , cant seem find anywhere. using built in register/login feature of asp.net. need have 1 admin account , rest basic users read access. lead me in right direction?

if referring asp.net identity, here "getting started" article:

https://www.asp.net/identity/overview/getting-started/adding-aspnet-identity-to-an-empty-or-existing-web-forms-project