How to manage those synth sounds/ loops?

Please forgive my ignorance. I just bought Cubase6 from one of my friends, with built-in synths such as Embracer, Monologue, Mystic, Prologue and Spector(why so many?). I have to admit that I’m not a synth enthusiast (at least not yet!) and am just trying to find a sound close to my need when making dance music. And there are so many presets as well as loops to remember. I wonder how do you guys manage them and call them back instantly when you need them?