It's easier on you (and more realistic) to master the skill of stabilizing an approach, landing, and using tools like ILS in smaller slower planes.
The techniques are all the same, be it a Cessna 172, or a monstrous A380 :o And forget about ILS until you can find the runway, and land it yourself 8-) ... and that's much easier to learn in a trainer
As for a step-by-step ILS guide, try this..
http://www.simviation.com/cgi-bin/yabb2 ... 1111322151