How it works
Each tab is one page, in a row. Only one tab is in front at a time: the page you see.
To switch pages, tap the tab you want, and it slides to the front.
To tidy up, close the tabs you do not need with the little x. Few tabs make a page easy to find.
If a page opens that you did not open, close it and tell a grown-up. You are never in trouble for a page that popped up.