Your editing will improve with mastery of the TextFormattingRules. Take the time to read them now.
Editing uses several different pages. These stack up in your browser. You'll want to be good at using the browser's Forward,Back and Reload buttons to move between them. Here's what's often stacked up after revising a page:
Sooner or later you'll want to Back out of this stack. You can back to the EditText page to make more changes. You can also back to the original page and Reload it. This won't discard your EditText page which can be reached by going Forward. The thank-you page may mention questionable spelling in the text just saved. You will want to back up and correct your errors. You can also use the provided form to add correctly spelled words to the SpellingChecker's dictionary.
Also observe a few CautionsWhileEditingText.