Hello,
There's also Chris Young's video which is a few years old now but is probably still a good reference to watch before you get started.
One of the comments on the video mentions a gotcha in that even if you folllow the instructions to the letter you can still find yourself locked out of your MySQL database that you've just created. I did exactly teh same thing and IIRC I had to do an uninstall and reinstall of the MySQL DB to fix it and then go through the setup in slow motion following the steps in the manual.
Once you do have it setup you will be part of a fairly exclusive club though ;-) as most of the world have their iMC on Windows and don't "enjoy" having to run an X server just to open up the deployment tool.
Watch the video, at least read the MySQL bit of the manual, give it a whirl - we'll help as best we can.
HTH
Ian