How do I model while using the select box?

Everytime I select something; whether its a vertices, edge, or face; I can’t move that spot around. I try pressing the right key but a box pops up. I can’t use the middle mouse key because you use that to look around the object. What key/number should I press to start modeling my cube while using the select box?

S to scale, G to grab/move, R to rotate. I suggest you take a look at the basic tutorials!