If not done already, you still need to install and activate Grimlock and the other required plugins. You can do this by visiting Appearance > Install Plugins in the WordPress admin pages.
Your theme uses a comprehensive feature called Customizer that lets you customize your theme to your liking and offers you a preview of the result while doing it. It’s an industry standard, it’s robust and it’s built into the core of WordPress. Our job has been to extend it to allow more options.
To start customizing your theme, please go to Appearance > Customize.
The customizer allows you to change the general look of your website, its branding or just specific bits. Using the customizer, you can customize colors, typography, layouts, menus, widgets and more. You will notice that you can instantly preview your changes. Once you are happy with your changes, make sure to save them and exit the customizer.
For detailed information on the many options available under the customizer, please visit the Theme Customizer section of our documentation.