Easy to put together once one gets their "bearings," meaning that if one takes a survey of the different sizes of the hardware, what screw fits in which hole, etc. it makes sense.  I installed it without reading the instructions.  Unfortunately, I purchased the umbrella first, then my glass table shattered, so I had to get a table that fit with the diameter of the hole in the umbrella and would have liked the table to be a little larger; however, overall, in the end, it all worked out well.