content: I worked with it without reading any directions, so for this I give it a thumbs up. I do however wish I could have drawn a little more accurate with it (I am an autocad design/drafter) so if it would have been more autocad friendly that would have been nice. The only thing else I wish I could have done with the program, that I was unable to do, was design a screened in porch. The system allowed me to design a deck and an all weather room, but I could not get the look of a screened area. Overall I felt it was easy to use, teach and quick to design/redesign. The files take up very little space. I give it 4 out of 5 stars but have no other deck design program to compare it to, it is the only one I have ever tried.