I bought two of these, one for me and one for my girlfriend. It's definitely a two person project- not because it's difficult but just because there are a lot of parts to manage. But the introductions are pretty straight forward, all pictures but pretty clear. Once you start it's very easy to understand how everything will come together. The only thing I found frustrating was putting the drawer tracks on, but it worked out fine and the drawers work great!  
All in all, they're stable desks, and not too hard to put together. I love the higher shelf- awesome to put monitors on to free up the main desk.