Extremely easy to put together.  They are on the smaller size, which is fine...but do look at the measurements if you wanting a more traditional sized fence.
Also the slats are small as well as the posts, but I believe the company gives you a very nice product for what you are paying.  I don't feel slighted in the least and I am ordering more because I just ordered one set to see what they looked like before buying the amount I need.
Also want to add that the posts that go into the ground we're sturdy enough to be driven into our Georgia clay and THATS saying a lot!  I'm a 74 year old lady and it was certainly easy for me to assemble and drive into the ground.