Be careful customizing it. Use it for little while and get a good feeling for it's stability (which is pretty good).
Since the touch is fairly new and a little different some thirdparty apps mis-behave. Anything you want to try, try searching this forum first to see if it behaves.
That said, This a great thread for newbies
http://pdaphonehome.com/forums/ppc-6...ll-levels.html
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EVO 4G, Stock Sprint ROM, ProClip in Car, Sony HBH-300.