Self-help window screen does have a back button once an answer is selected. First, you have to go to Help screen:
When you are in an answer window screen and would like to go back to a previous answer, click the small white arrow that points to the left. It is located just to the left of the search field at the top of the window screen.
They have several external-facing pages with self-help content for QuickBooks Online. Some of the contents are not up-to-date. Some external links will take you to unrelated articles. We recommend visiting our site (http://newqbo.net) to learn QBO. For QBO tutorial videos library visit our other site > http://QBOHarmony.com > Our “watch and learn YouTube videos” are watched and subscribed by QBO users from over 150 countries.