Photoshop is every photographer's favorite tool and it's used as a verb in many situations. For the most part every photoshop update has the exact same tools. For that reason this shouldn't matter which version of PSD you have. Just get to know the tools and practice with each one.
Here it is... you use this icon to
move things. Shortcut "V" -
that's about it.
When you want to zero in on an object, the marquee tool is a good option. You can create a round shape, single column, single row or rectangular shape. You can even make a perfectly square image by holding down the shift key when you drag. It's one of the most used and useful tools, very basic actually. When I'm working with a the brush tool, I will sometimes use the marquee tool to set my boundaries if I don't have a steady hand.
*Did you know that if you click COMMAND + T, you'll be able to further distort the shape? Try it out.