Hi, I just got me a Macbook and I some questions, this is my first mac and my first time using OS X. 1. Where can I get more memory? It came with 2 gigabytes DDR3 memory and was thinking of upgrading it to 4. What brands do you guys recommend? 2. Does this thing have a bios setup? 3. After updating the software, Help no longer works when I am offline. Anybody know how to fix this?