How to properly configure SQL Server on Windows Server 2012 R2 to fully work with IIS?

Question

IIS

Hello.
I have never encountered this before - I worked all the time with MongoDB. With MS-SQL only locally, and then in toy projects. Actually, a question.
I can’t set up SQL Server correctly on Windows Server 2012 R2 in any way: sometimes errors fly out, then something else, and a third thing, then there are no rights. I rummaged through the entire StackOverFlow, Russian-language forums - I did not find the material chewed up, using simple examples. Please, to whom it is not difficult - explain.
My skype is in my profile. Or I can write myself.