Confused about configuring software

[Infinity429]

I have reason 3.0, sound forge 6.0, Cubase Sx3, Nuendo 3, Halion 3, fruitloops, vegas 4.0, cakewalk, wave lab 5.0, PCDJ and I don't know what each software is for except for reason. I have no clue how to work anything but reason so can anybody give me some insight on what to do with these programs . *For example, I use Cubase for editing, cakewalk for sampling,. I hear Cubase, nuendo, and halion are some pretty tight programs. And how to configure these to work together. Gracias!