I've attached some photos of the greenhouse (including 'before' and 'after' shots; unfortunately the tomatoes in the after shot are only about two thirds of the size they were a couple of weeks ago!)
When I looked at all the bits in the packages I thought there was no way I could put it together by myself. However, the instructions were easy to follow and all the pieces were manageable by one person. As long as the initial platform is level everything fits together beautifully. And, for people like me, there's enough tolerance in the design for it to fit together even if the original platform isn't perfectly level.
By having one side for growing (in my case peas and then tomatoes, chilies, capsicum and cucumbers) and the other fitted with two shelves for supporting the containers for growing from seed and cuttings, the greenhouse became both a working and growing area ... and a haven of peace and quiet. Actually, this year I planted both sides with tomatoes as an experiment, but was almost driven out of the greenhouse by the rampant growth and only managed to claim a small section near the door to work on the seeds and cuttings. I'll not do that next year.
All the best