Very easy to install having put one together similar before; having said that the instructions on this were of no additional help.

The collars around the sockets are a little rattly.  The mounting plate is plenty sturdy and the screws are all easy.  

My install tips:
Fully put together on a table/counter/floor.
Put the plate on the wall with the screws VERTICAL.
Hang the light from the bottom screw to make your electrical connections.
Put light on.