Use below Minia structure for modify and better understand the Minia.

1. Minia Asp.net MVC Folders
Folder Path Uses

Controller

Minia/Controller/ All controller files here.

Models

Minia/Models All Core models. you can add your custom also

Routes

App_Start/RouteConfig.cs/ You can set route in routes in file

Views

Views/ All Pages files here.

gulpfile.js

/ Gulp or build related code. if you don't have knowledge about this then don't modify it.
2. Minia MVC Layout Files
File Path Uses

_BlankLayout.cshtml

Views/Shared/ Auth pages layout.

_Footer.cshtml

Views/Shared/ footer related code. you can modify as per your requirements.

_HeadCSS.cshtml

Views/Shared/ All css link here.

_Layout.cshtml

Views/Shared/ layout master.

_PageTitle.cshtml

Views/Shared/ Page Title related code.

_RtlLtr.cshtml

Views/Shared/ left-to-right (LTR) and right-to-left (RTL) text direction related code.

_Sidebar.cshtml

Views/Shared/ Sidebar menus related code, you can add new menu here.

_TitleMeta.cshtml

Views/Shared/ Title meta related code.

_Topbar.cshtml

Views/Shared/ Topbar menus related code, you can easily customize topbar from here.

_VendorScripts.cshtml

Views/Shared/ Common javascript files includes here.
3. Minia MVC Auth Files
File Path Uses

Signin.cshtml

Views/Auth/ Login view page code, if you need to customize login you can do from this.

signup.cshtml

Views/Auth/ Registration page view code.

TwoStepVerification.cshtml

Views/Auth/ Password confirmation page.

Recoverpw.cshtml

Views/Auth/ Forget password page.
Structure

Extract the zip file you received after purchase and you would find the exact below files and folders:

Minia ASP.net MVC

        ├── Admin
            ├── Minia
                ├── App_Data
                ├── App_Start
                ├── assets
                ├── Content
                ├── Controllers
                    ├── All Controller

                ├── Models
                ├── Views
                    ├── All Pages

                ├── Web.config
                └── All other folders
                ├── packages
                └── Minia.sln
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