Would anyone mind telling me the basic start up procedures?

How many different types are there? I've heard of a number of different start-up types (Butane,Propane and Kero) but I don't know which is which. Which manufacturers offer the most convinient start-up systems?

I would assume full kero start is the latest technology... Do most engines support this method?

What is the little valve/device that I see pilots holding at start-up? It has a tube running into the turbine and the operator appears to turning something.

Is there a fully automatic start available? I think I saw a video for a Jetcat turboshaft heli engine, In which the pilot flipped a switch and the turbine pretty much did everything on it's own. Is there any such setup for turbojets?

Any info at all would be great! Thanks!

Pete