welcome to SM.

and yes it is a heavy idea to start with a room. if it is your own room, you need to have it perfect. you should start with something simpler if you dont want to be frustrated after a few minutes. a good start are the excellent tut on your maya online documentation (just hit F1).

and if it comes to official version, there is only one version that you can talk about here, and that is the one you downloaded (if it is the personal learning edition) or a commercial version purchased from alias|wavefront. other versions do not exist here. simple rule you should follow if you want to stay here.

and now have fun in the great world of 3d.