Mac newbie. I like lots of desktop icons, some as actual files, and most a shortcuts to launch things. How do do that in Mac? Also, I believe the Mac analog to Windows quick launch tool bar is the dock, right? How do I keep those icons there? For example I installed Skype, and the big blue circle with the white S disappears, and I have to find it all over again (something not easy) and relaunch it. I'd like that icon to stay there. Also, how do I remove icons from the dock?