Hi Stephanie,
I think I can help quite a bit. I drive this at work,
I'm also a certified driver trainer. I have taught a whole bunch of people to back all sizes of trailers. Here's the basic, and most desireable way to back into a space.
1.) Drive up to the space with it on your left hand side. It's important to have the space on your left if at all possible so that the trailer wont block your view as you back around the corner into the space.
2.) As your front bumper passes the space, take a good look at the space. Ask yourself, "Is this space wide enough for my vehicle to fit? Long enough? High enough?" If you are not sure you can fit, go somewhere else.
3.) As the back edge of the drivers door passes the space, cut the wheel to the right hard. You are trying to end up with the vehicle at a 45 degree angle to the space, with the back bumper pointed at the space. Sometimes you don't have the room to do this, but get as clost to that configuration as possible. It just makes things easier.
4.) Now you are ready to back up. You will be mostly blind to what is going on to the right of your trailer, so here is where your careful inspection of the space in step two really helps. You already know the space is wide enough, so you want to hang to the left as you back in. Since the space is clear of obsticles, and wide enough, you are far less lil\kely to have a problem if you stay left.
5.) Put your vehicle in reverse. Place your hands on the BOTTOM of the steering wheel at the 6 o'clock position. As you begin backing, move your hands in the direction you want the trailer to go. Moving your hands to the bottom of the wheel helps you keep it clear in your mind at the moment you need to steer which way is which.
6.) The whole time, have your windows open and listen carefully. The sounds will help you know what is going on. The very first moment you are unsure about where the trailer is going, or what is happening back there, STOP! Put the vehicle in park, and get out and look. Better ten trips to go look than bent up sheet metal.
That's about it. I'd suggest you make a trip to a mall parking lot after closing. Take a few empty two liter soda bottles to use as cones, and practice, practice, practice. I use two liter bottles when I'm training people to back up a tractor trailer. They are cheap. They will stay put with just a couple inches of water in the bottom and the lids screwed on tight. They also have the bonus of making a big POP if you run over them.
I hope that helps