I am a novice DYI, 60 yo woman, doing an install for the first time.  I found the instructions to be straightforward and easy to follow.  After 6 months, I have had not trouble and am enjoying the 3 pattern head and single lever  handle. I have received many compliments on the square design.  
One suggestion, in reading through the questions, especially on clearing debris from the line, I recommend putting those instructions in the troubleshooting section  of the manual so people don't have to hunt them down online.