Hi, Just got my new ibook 12". Thanks everyone for your help. I need some help. I am a new mac use. When I open an application, the application windows opens up very small. How can I make all the applications to open in full screen size? Also I installed 512mb ram. Is there any way I see that I have 768m ram in OS? I don't know the 512mb ram is working or not. Do you know any website for basic mac tutorial like how to install and unstall and other basic stiff? Please help me. Thanks.