Walking is a great way to see the city, and to me is the only real way. Each of the areas of Naples are so distinct, and the only way to get a feel for them is by foot.
You can stop for coffee on a whim, grab a small pizza for a couple of euros, wander into tiny shops and pause to peer onto a gorgeously ornate church. While a little rough around the edges, the most beautiful buildings, churches and paintings await you around every hard earned step. And steps! There will be a few - you will not be missing leg day in Naples.
However, despite these many advantages, it does mean you navigating the Naples traffic with only a bag to hide behind. Therefore, remember to always be aware! Mopeds will not stick to the right side of the street, and may even join you on the pavement. Cars and vans far too big for the tiny streets they are on will perform Knight Bus style fetes to get around tight corners, so always look around for them even on the narrowest of streets! Most people beep, more for warning than annoyance, but some do not.
The main roads require confidence. Most cars will stop for you if you show intention of crossing (i.e... step into the road) but mopeds, of course, will mostly try and go around you. There are places to cross with white lines on the road, and if you're too nervous just wait for an elderly Italian lady to step fearlessly into the road and scuttle behind her. There are traffic lights, but most have the mentality that red only counts as a stop signal if someone is crossing.
Most people are very aware, so don't be too nervous and don't let the close mopeds frazzle your nerves. Just keep your wits about you. And maybe some earphones for the beeping.
Some words for today:
Attenzione - attention/careful
Permesso - permission, let me through!
Posso - can I
Mi potete aiutare? - Can you help me?
Dove sono? - where am I?