Minor fixes and clarifications (#23177)

* Update razor-pages-start.md

* Update model.md

* Update model.md

* Update sql.md

* Update model.md

* Update model.md

* Update model.md

aspnetcore/tutorials/razor-pages/model.md

@@ -784,6 +784,8 @@ In this section, the movie model is scaffolded. That is, the scaffolding tool pr
    1. Select **Add**.
 
    ![Add Razor Pages](model/_static/3/arp.png)
+   
+   If you get an error message that says you need to install the `Microsoft.EntityFrameworkCore.SqlServer` package, repeat the steps starting with **Add** > **New Scaffolded Item**.
 
 The *appsettings.json* file is updated with the connection string used to connect to a local database.
 
@@ -968,7 +970,7 @@ An alternative approach is to disable the CS8618 [warning with pragma](/dotnet/f
 
 [!code-csharp[](~/tutorials/razor-pages/razor-pages-start/sample/RazorPagesMovie60/Data/RazorPagesMovieContext.cs?name=snippet_prag)]
 
-For the warnings in the Razor Pages C# code behind files, use the [pragma](/dotnet/csharp/language-reference/preprocessor-directives#pragmas) C# preprocessor directive is disable warnings. For example, use the following highlighted code in the *Pages/Movies/Index.cshtml.cs* file:
+For the warnings in the Razor Pages C# code behind files, use the [pragma](/dotnet/csharp/language-reference/preprocessor-directives#pragmas) C# preprocessor directive to disable warnings. For example, use the following highlighted code in the *Pages/Movies/Index.cshtml.cs* file:
 
 [!code-csharp[](~/tutorials/razor-pages/razor-pages-start/snapshot_sample6/Pages/Movies/Index.cshtml.cs?name=snippet&highlight=3-4,21,22)]
 

aspnetcore/tutorials/razor-pages/razor-pages-start.md

@@ -417,7 +417,7 @@ We hope to have Visual Studio for Mac instructions soon.
 
 <!-- replace all of this with updated includes  -->
 
-Press Ctrl+F5 to run without the debugger.
+Select **RazorPagesMovie** in **Solution Explorer**, and then press Ctrl+F5 to run without the debugger.
 
 Visual Studio displays the following dialog when a project is not yet configured to use SSL:
 
@@ -505,8 +505,7 @@ The following code enables various [Middleware](xref:fundamentals/middleware/ind
 * `app.UseRouting();` : Adds route matching to the middleware pipeline. For more information, see <xref:fundamentals/routing>
 * `app.MapRazorPages();`: Configures endpoint routing for Razor Pages.
 * `app.UseAuthorization();` : Authorizes a user to access secure resources. This app doesn't use authorization, therefore this line could be removed.
-
-`app.Run();` : runs the app.
+* `app.Run();` : Runs the app.
 
 ## Troubleshooting with the completed sample
 

aspnetcore/tutorials/razor-pages/sql.md

@@ -427,6 +427,12 @@ Update the *Program.cs* with the following highlighted code:
 
 [!code-csharp[](~/tutorials/razor-pages/razor-pages-start/sample/RazorPagesMovie60/ProgramSeed.cs?name=snippet_all&highlight=14-19)]
 
+Add a `using` directive to the top of the file:
+
+```csharp
+using RazorPagesMovie.Models;
+```
+
 # [Visual Studio Code / Visual Studio for Mac](#tab/visual-studio-code+visual-studio-mac)
 
 [!code-csharp[](~/tutorials/razor-pages/razor-pages-start/sample/RazorPagesMovie60/ProgramSeed.cs?name=snippet_all_sl&highlight=14-19)]