There's no mention in eLEARN about requiring new cylinder head bolts for either the 8v or 16v JTD engine (don't know which you have), although for both versions, the bolts are tightened in angular stages and it's usually recommended to replace bolts tightened using this method.
Camshaft timing method differs for the 8v and 16v versions.
For the 8v, there's a mark on the camshaft sprocket and a pointer on the plastic housing.
If you have the 16v version you will need locking pins to time the 2 camshafts.
The crankshaft sprocket is timed using a Fiat special tool fitted to the sprocket and one of the oil pump bolts. Part number of the tool is 1860905000, about £14 from Fiat.
Some timing belt manufacturers, including Gates and Dayco, mark the belt with 3 white lines. You could use the appropriate 2 of these lines to set the crankshaft sprocket if you don't want to buy the Fiat tool.
The fuel pump on JTD engines is purely a high pressure pump so doesn't need timing. You can fit the belt on it anywhere.