Pretty simple to install. I recommend finding studs behind the wall to mount this to. I also suggest installing a small 1.5" aluminum or steel angle iron (cut to 18") amd attach to studs to hold vanity up while installing brackets and adding some additional support underneath. Make sure you use a level, mark out studs and height, pre fit before settling ....on install. 

Note: The opening in the back is very small and will restrict the height of your counter if your drainage is installed lower. Otherwise, you're having to modify it or the drainage to meet your desired height. This is why I used the angle iron to set the vanity as close as I could get to the drain at the bottom of the opening and then set my brackets above in place.