HomePage.xaml.cs

public partial class HomePage : FlyoutPage
{
    public ICommand ShowQuickTourCommand { get; }

    public HomePage()
    {
        InitializeComponent();

        var quickTourLauncher = QuickTourBuilder<QuickTourStep1PopUp>
                                  .Initialize()
                                  .Next(new QuickTourStep2PopUp())
                                  .Next(new QuickTourStep3PopUp())
                                  .Build();

        ShowQuickTourCommand = new Command(async () => await quickTourLauncher.LaunchAsync());

        BindingContext = this;
    }

    protected override void OnAppearing()
    {
        base.OnAppearing();
        ShowQuickTourCommand.Execute(null);
    }
}