Replacing a faucet might seem like a somewhat scary task, but it is something that most homeowners can do on their own. In fact, there are basically only two concerns – will you remember to turn off the water supply, and will you fit underneath the sink to get access to the mount for the faucet. If so, then you should be all set.
Finding the water shutoff should be straightforward. It is generally located right underneath the sink. Once that is off, all you need to do is disconnect the water supply lines from the faucet, remove the nuts that hold the faucet in place, and possibly remove the connector to the lift rod that opens and closes the drain.
To install your new faucet, just follow these steps in reverse and you will be all set. For some additional water-proofing, adding some silicone or caulk around the faucet is a good idea.