Child theme Sydney free

To use the Sydney Free Child theme, should I just install the Child and activate it?
I downloaded it from here:

Should I set something in a PHP or CSS file before I start working?

Hello there,

To use a child theme, you have to activate it. The default child theme found in that documentation link will inherit all styles and layout of main Sydney theme. To change and add some customisations, you can use child theme’s style.css to do CSS works. Use child theme’s functions.php file to add PHP functions. For more complete tutorial, follow these resources: