You need a decent socket set, and a magnet on a sticks handy for the manifold > head bolts as they fall out. Manifolds dead easy to take off, if you've never done it before I'd say you'd have it off in 20/30 mins tops. You'll need an E8 socket for the 4 bolts ontop and a 10mm socket for the bolts holding it on the head at the front.
I'd leave the injector rail attached to the manifold saves trying to feed the wiring along which can be a mare trying to get them back on, just flip it over leave the injectors connected basically.