I never istalled a faucet until last night. I am a real novice. The old facucet was hard to take out.  Took some time.  The Delta was easy to install. I reviewed a coule of videos on you tube which helped.  I just needed help from my daughtet to hold the facuet in the right place as I tightened the nut under the sink. Once I tighten the nut, the rest was easy to do the connections.  Very impressed with the different  sprays on the the faucet. My next project is to fugure out how to fix my bathroom Delta faucet.