Create your first category
After you installed the Price List component you will find the price list categories in Components » Price List » Categories
There is already 1 category installed called "Uncategorised". You can edit this.
Change the Title and Alias.
You can also add a category-description which will be showed below the category-title.
In the tab "options" you can add an category-image.
In the frontend of your website it will be look like this:
all styles like fonts and sizes are based on your installed template
In the Price List options you can add Custom CSS to style it exactly the way you like.