Are you looking to create a 3D model of a box with a hinged door and that folds/unfolds?
There are a few different approaches you can take, some easier to understand and follow for a beginner and others that are a lot more complicated.
I had a "test" like this for a prospective employer, they wanted to verify I knew Inventor (I guess my references and experince of being on it since release 3 wasn't enough). So the test was to create a box with another box inside as well as a hinged door. The idea was to create a box that would change in size dependant on the inner box. Well, I did such in the quickest and cleanest way possible, all while being watched by the interviewer. Looking over at him from time to time he was shaking his head in disagreement. When finished, he insisted I did it wrong and that it would never change size the way it's supposed to. I assured him it would and then put it thru the test. Sure enough it worked just as I expected, problem was, he wanted it done using skeletal modeling (note: that wasn't in the guidelines). I said, OK, no problem and made it accordingly while I mentioned some of the pitfalls of doing as such. But he still didn't care for the fact I was able to make it a different way that he hadn't thought about and still didn't trust it. Had me get up as he began changing parameters, hoping it would fail, it never did and he got more and more frustrated. I ended the interview and told him if he can't open his mind to other possibilities, then I simply didn't want to work for him.
Long story short, there's more than one way to skin a cat and Autodesk is known for having these options available.
So if you can. provide a bit more info and I'm sure numerous people here can and will give you many different ways to accomplish what you are looking to do.