I have no idea how to even use a mac so please cut me some slack! I just recently was given an older mac from a friend of mine. I looked on the box and it is a 1st generation iMac G5 20". It has never been upgraded so everything is still from 2004. I really need help figuring this out. I can't download anything because it basically says that everything is too old! I've been looking for ways to download upgrades but when I try again it says I don't have new enough versions to download. I am so confused and I just want to be able to download apps. Any advice? Please keep in mind that I am completely mac illiterate.