Click the icon at the upper right to access online help, keyboard shortcuts, and more. Below are direct links to some help topics at Atlassian's confluence documentation site.
Creating and editing pages
https://confluence.atlassian.com/conf61/create-and-edit-pages-877187519.html
Linking
https://confluence.atlassian.com/conf61/links-877187616.html
Attaching files
https://confluence.atlassian.com/conf61/files-877187861.html
Watching pages
https://confluence.atlassian.com/conf61/watch-pages-spaces-and-blogs-877188147.html
Page restrictions
https://confluence.atlassian.com/conf61/page-restrictions-877187603.html