Logged in to edit, content blocks rimmed in red - can be edited, moved etc. Alternatively: add to main, sidebar or header -> content block then the editor has toolbar for formatting etc. Across the top of editor links to add image, add file or insert link.
For a link, type the text you want into the editor, highlight it, then click "insert link to page" and select target file.
Enter does new paragraph, shift+enter for new line
Editing dropdown to add subpage. Murray & I made 'arbitrary' working together.
On that note, ask again how to get into the file manager to delete unused files.
I made 'purpose' to keep these notes, but first I made 'not so much' - total fail (stick with full width)
Be careful to make only content changes. System changes can run site-wide and affect other districts or even Area 66 level.
Get an image on the computer I'm using then on area site - Edit block - add image (UL) - upload - nuke it out from there