Go to sites.google.com or click the "pencil" edit icon in the lower right corner of this site. If you can view this site, you should have access to edit it. You must hit the publish button and accept the changes for people to be able to see your edits!
Google sites is a no-code website builder. The toolbar on the right allows you to add text, images, google documents, buttons, and other elements. You can also embed other sites or html code using the embed tool.
The format and layout can be whatever you want but please keep it organized! Use some existing elements/pages on here as templates to keep it consistent if you can.
There's lots of online resources to help with "New" Google Sites creation and editing
If you have any questions or problems along the way, please contact AJ Wasserman on Slack!