About six months ago I was given a slightly used Mac PowerBook G4 with a bunch of software on it. The person who had it before me was also into photography so it has CS2 (Photoshop and Bridge included in this), Aperture, and iPhoto. I never had a Mac before getting this one, so I'm still getting used to it. I started teaching myself Photoshop last week and am making some progress. Just yesterday is when I realized that I also have Aperature and did some research on it. My question is: How do all of these things work together??? Do I still need to use iPhoto if I'm going to use Aperture or do they have separate purposes? Do I need to use Aperture if I am using Photoshop? Where does Bridge fit in, or do I even need to use it? What about Acorn? I'm so confused! I want to use these things that I already have in the most efficient way. I plan on spending a great deal of time learning how to use these different programs, but right now I need to know if I need to use them ALL or only some. I just need a Mac tutor!!!!