Look for an editor like this one in the right hand sidebar. You can move the sidebar, if you care to.
This is an H1 for the sidebar.
And this is an H2
Text, text, blah blah text.
Look! A random picture!
| table row 1 | Cell 2 | Cell 3 |
| table row 2 | Cell 2 | Cell 3 |
| table row 3 | Cell 2 | Cell 3 |