Your Guide account is organized into channels (like "folders") and guides (like "documents"). Unlike folders, guides can be in multiple channels. For instance, if you have a general guide about your organization, you can put that guide in a "General" channel and a "New members" and a "partners" channel.
Channels are used to organize your content and manage access & permissions. Channels can have three access levels:
You can create an unlimited number of channels.
There are many ways to create a new channel, but the easiest way is to click on the "create" button on the left top corner of your screen (beside your photo):