The main content on the site is contained in this section. In order to navigate from section to section, note the ">" to the right of the options and after scrolling to the right the "<" to the left of the options.
Clicking on the ">" and the "<" will allow you to navigate through each section including:
How to Become a Grassroots Referee
How to get Recertified as a Grassroots Referee
How to get Assigned Games
How to Improve as a Referee