message: add pre-reqs and expectations of the tutorial
diff: @@ -10,7 +10,19 @@ Having a good Backstage home page can significantly improve the discoverability
  For App Integrators, the system is designed to be composable to give total freedom in designing a Home Page that suits the needs of the organization. From the perspective of a Component Developer who wishes to contribute with building blocks to be included in Home Pages, there's a convenient interface for bundling the different parts and exporting them with both error boundary and lazy loading handled under the surface.
  -Let's get started by installing the home plugin and creating a simple home page for your Backstage app.
  +At the end of this tutorial, you can expect:
  +
  +- Your Backstage app to have a dedicated home page instead of Software Catalog.
  +- Understand the composability of home page and how to start customizing it for your own organization.
  +
  +### Prerequisites
  +
  +Before we begin, make sure
  +
  +- You have created your own standalone Backstage app using [`@backstage/create-app`](index.md#create-your-backstage-app) and not using a fork of the [backstage](https://github.com/backstage/backstage) repository.
  +- You do not have an existing home page, and by default you are redirected to Software Catalog when you open Backstage.
  +
  +Now, let's get started by installing the home plugin and creating a simple home page for your Backstage app.
  ### Setup home page
  @@ -118,7 +130,7 @@ In the next steps, we will make it interesting and useful!
  There is a default home page template ([storybook link](https://backstage.io/storybook/?path=/story/plugins-home-templates--default-template)) which we will use to set up our home page. Checkout the [blog post announcement](https://backstage.io/blog/2022/01/25/backstage-homepage-templates) about the Backstage home page templates for more information.
  -<!-- TODO detailed instructions of using one of these templates. -->
  +<!-- TODO for later: detailed instructions for using one of these templates. -->
  ### Composing your Home Page
  