I put in a CD to copy some pictures (another problem for another time) and now I cannot eject the cd.  I tried the button on the keyboard - nothing. I tried going to file but EJECT is greyed out.  The computer doesn't seem to see the disc.  Is there a way to force eject?

I try these things first: right-click on CD icon and choose Eject Disk, Select disk and go to the Finder's File menu and choose Eject (cmd-E), and drag icon to trash/eject symbol. Sometimes the normal ways don't work and the Finder won't cooperate. Next I would try relaunching the Finder. You can do that from the Force Quit box (opt-cmd-esc). If all else fails, I restart my Mac holding down the Eject key after the chime. That always works for me.

BestBuy set up my MacBook and put my dad's name as the user, is there any way I can change it?

Go to System Preferences>Accounts and change the Full Name there. However, you may want to take this opportunity to just add yourself as a Standard account rather than the main Admin one. Doing this adds a layer of safety because you will have to enter the Admin info whenever serious changes are made to your Mac.

You are in luck because your Mac already comes with the software to act as a fax machine, it's just not obvious. But you will need to get some hardware: a USB modem and a phone line. Once you have those things added, go to System Preferences>Print & Fax and add a new device. Select from the Fax choices.

Now when you need to fax the document you are working on, go to Print and look for the little PDF button/menu in the lower left. Hold that down and select Fax PDF from the options.

Now you may be asking about internet faxing, where you use an internet service and your ISP connection rather than a phone line. In that case there are many services like eFax or Fax.com, but I don't know of free ones. These ones charge a monthly fee.