Fairly simple to put together, though that may be because I had a little experience with a different shelf that I put together recently that was similar, but different. There are only pictures on this instruction sheet, no words for clarification. There is a YouTube video you can look at, (which I did) but it was pretty useless. I'm 5'4" and was able to put it together myself. Having another person would have probably made it a tad simpler. Plus, I had to assemble it in a small space. I recommend work gloves and you'll need a mallet (which were included with the last shelf I had purchased, this does not come with those items). I purchased these particular shelves for the adjustable shelves, and it was the exact width that I needed in my small space. Though it has 5 shelves, I only used 4 due to the height of the bins I was storing on them. They have a middle beam to give each shelf extra support. (They were actually the most difficult to install due to my height and how you have to maneuver around the side beams to hammer these in place.) Overall, I am satisfied with the results and can recommend them. They serve my purpose well and seem to be sturdy, even with one of the shelves not used.