Unzip the theme download file you received after purchase.
In your WordPress dashboard, go to Appearance > Themes.
At the top, click “Add New” and then click “Upload Theme” on the next page.
Click Choose File. Select the genesis.zip file that came inside your theme download file.
Click Install Now and wait for the framework to install. You don't need to activate it.
update Genesis any time in the future as updates become available. It's good practice to always update Genesis to the latest version BEFORE updating WordPress to avoid any issues. We also advise that you back up your site prior to installing any updates.