You will usually find a wiring diagram tucked into the console on most of these machines which can help a lot if you are stuck.
The first thing that I would check would be that the belt is not snapped as that is the most common thing that will stop the machine, after that it would be the door switch.
The only thermal fuse that would stop it is the one on the exhaust duct (thats the white one with only 2 wires the other is a temperature thermostat that you can ignore) – you can ignore all the sensors on the heater duct as they only deal with the heat.
I have never seen the fuse that Dave mentioned fitted to a tumble dryer, as far as I know they are only fitted to the washing machines.
If the motor buzzes but doesn’t turn when the start switch is pressed then you may need to check the centrifugal switch on the motor (not seen one fail myself), if the switch is fine and it buzzes then it may need a new motor (I have had to change several for this – also get a set of fan blades as more often than not you have to break the old ones to get them off).
Hope that helps.
Jem