Let's start with the most basic of the basics.
Press your down-arrow key to scroll down if you are on a computer. If you are on a mobile device (phone or tablet), simply tap your screen & slide your finger up while still holding your finger on the screen to scroll down.
Scroll down to where it says "Basic Navigation Help" & click/tap the "V" button next to it.
If the text looks like it ran out, scroll down to reveal the rest of it.