The most important thing to know is that you can change how you insert the table top to obtain either an inclined surface or a flat surface. Yes, you have to pull out the top to change positions. What I love most about this desk is that it goes down low enough that I can sit at my low sofa and still be in a comfortable position to type.Pay attention to two things that I got wrong when assembling. The wheels with lock function go in the front. The supporting tube needs to angle in the correct way. I mounted it incorrectly and the table would tip over. Detail oriented people will probably not have a problem with the instructions, but if you are like me, you might miss those two details.