After you’ve installed and activated your theme you can setup the home page.
To define the first page of your website you have to go to Settings->Reading in your Dashoard’s left sidebar.
In this page you can define the home page as a static page (in the dropdown menu you have to choose between one of your pages) or use your main page as a last post page.
If you select the home page as a static page also you can define a post page, which is a page that contains all your latest post.
To define your permalink structure you’ve to go to Settings->Permalinks and select one options between the one displayed or create your custom structure in the custom field.
Remember to click on save button after you’ve done your changes to save your settings.