Built two of these over the weekend. The first one took 7 hrs to build and the second one only took 3 hrs. Things I learned:
1) Do step 3 before you do step 2. It was a nightmare trying to fit the 1x12s into the rectangular opening. Once you get the 1x12s in there, you can sandwich the 2x2s neatly onto the sides without having to shave down the 1x12s trying to get them to fit.
2) Check for square as you go. This will be important when you get to step 4 and 5.
3) I don't know about other folks but the 2-1/2 PH screws were always screwing all the way through to the other side so I used 1-1/4 PH screws for most places.
And that's it folks! A gorgeous and easy side table. =)