You can also use node override, create folder "About" and in Design->Templates->/node/view/full.tpl create template about.tpl than in "Override keys" type node id of "About" folder in to "Node ID:" field.
"About" folder will appear in menu, and will use about.tpl template file.
I suggest to take TCSM tutorial it`s very usefull at the beginning.
Thanks very much, everyone. I'm going through the tutorials and documentation right now and I think creating a new content class for static articles will be the best way to go for what I'm trying to do.