Before starting the Rubik's cube, it is important to understand cubing notation.

This graphic shows the different movements you will make on the cube from the front

For example, if the formula were "F R U", this would be the sequence you would use, with red being the front.

Also, in the images on this page, orange on the cube below would be considered the front, so "F" would twist a row of yellow down into the blue section.