Like I said I think you should wait until you are really ready. Since you had trouble finding info to read I'll get you started.

http://67.18.108.244/showthread.php?t=167& - to learn about measurements

http://67.18.108.244/forumdisplay.php?f=102 -read everything here

http://67.18.108.244/forumdisplay.php?f=12 - read everything here