Make sure you are logged in to the WordPress Admin dashboard.
Once you are in the dashboard go to Appearance -> Themes.
You will see a list of all the themes currently installed in your application. To install your new WordPress theme, simply click on the Add New tab. Search for the latest Theme in the WordPress dashboard search bar.
Now, click the Choose theme, select Conceptly theme, and press the Install Now button.
In a few seconds, WordPress will upload and Activated.
You will need to activate the theme for the changes to take effect.