Intel Based Mac's Key Press for startup

[MaCiNToSHeR]

Hello friends, I have switched to Mac computers from Windows PC. I want to learn every possible things about mac. I want to first know what are the Intel Based Mac's Key Press for startup option which can be used for trouble shooting. Thanks!

[Solomon]

Keystroke = Description
Press C during startup = Start up from a bootable CD or DVD, such as the Mac OS X Install disc that came with the computer.
Press D during startup = Start up in Apple Hardware Test (AHT), if the Install DVD 1 is in the computer.
Press Option-Command-P-R until you hear two beeps = Reset NVRAM
Press Option during startup = Starts into Startup Manager, where you can select a Mac OS X volume to start from. Note: Press N to make the the first bootable Network volume appear as well.
Press Eject, F12, or hold the mouse (/trackpad) button = Ejects any removable media, such as an optical disc.
Press N during startup = Attempt to start up from a compatible network server (NetBoot).
Press T during startup = Start up in FireWire Target Disk mode.
Press Shift during startup = Start up in Safe Boot mode and temporarily disable login items.
Press Command-V during startup = Start up in Verbose mode.
Press Command-S during startup = Start up in Single-User mode.
Press Option-N during startup = Start from a NetBoot server using the default boot image.

[SalVatore]

Only the following models can be used the above option :
Mac Pro, iMac (20-inch, Mid 2007), iMac (24-inch Mid 2007), iMac (Mid 2006 17-inch), iMac (Early 2006 20-inch), iMac (Early 2006 17-inch), iMac (24-inch, Late 2006), MacBook Pro, MacBook, Mac mini, iMac (20-inch Late 2006), iMac (17-inch, Late 2006 CD), iMac (17-inch, Late 2006), MacBook Air, Mac Pro (Early 2008)