If haven’t imported the demo content, you need to create the Home and Blog (Posts Page) first.

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Create the Blog page

The Blog page is the posts page, where your blog posts will be displayed. If you don’t want to run a blog on your website, just skip this step.

1. Navigate to Pages » Add New
2. Name it as Blog (or whatever else you prefer) and hit Publish
3. Set this newly created page as your posts page at Front page displays

Note: you can find all settings of the Blog (Posts Page) at Customizer > Blog > Archives section.

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Create the Home page

The Home page is the front page where the users will land, when they open your website.

1. Navigate to Pages » Add New
2. Name it as Home (or whatever else you prefer) and hit Publish
3. Set this newly created page as your homepage at Front page displays