You might have noticed that on one of the toolbars at the top of the page there is a straight arrow pointing to the left. This is the back arrow and is very important as it allows you to return to the last page you looked at. If you keep pressing this you will get back to where we started today. You might then like to click on the forward arrow (this points to the right) which will eventually lead to this page. Have a try at using the arrows!