Maranello is a town in Emilia-Romagna.
If your coming by train to Modena then you have to take a bus to the bus station and then a bus to Maranello.
Take a bus from the Modena bus station. The bus to Maranello leaves every 1 hour and takes abt 30 mins be sure to ask the driver to stop at the galleria ferrari stop.
The Maranello bus station is along the street from the Ferrari factory. Tickets can be purchased at the pub.
The town is quite compact so you can walk.
This town is all about Ferrari. The Ferrari factory is off-limits, unless you are able to arrange a tour through a Ferrari dealership. Preference for those tours is given to Ferrari owners and 30 days notice is usually required. But the Galleria Ferrari which boasts both historical and new Ferrari road and F1 cars is worth seeing. You can also see a part of the Fiorano test circuit from the roadside when coming into town - if there is testing going on, expect to see a lot of tifosi (Ferrari fans) around.
Ferrari Galleria is the only actual sight alongside the Fiorano circuit. It's not far from the Ferrari factory (an easy building to spot if coming on a bus): just walk towards the Ferrari Store opposite the factory and search for a sign. Tickets are 12€/adult. If you are a family its better buying a family ticket which costs 8€/adult
There is lots of Ferrari merchandise available everywhere.
You can eat in a - you guessed - Ferrari themed restaurant or look for something else. You won't starve.
Find a pub - not difficult.
Your options are better in Modena