Currently, my front door is just the one main door. I am interested in installing a storm door. I would like to do this because during the cooler, nice months, I would like to leave the main door open and the door to the screen room open so I can get a cross breeze going through the house. How do I determine whether or not this is a possibility? Is it something that is relatively easy? Is it easy to mess things up? I am not sure what else to ask or how to ask it since I'm not a very handy guy but would love to be more so in an effort to save money on contractor's fees. Thank you in advance.