off roading in your 2.8 blazer

i have a 2.8 automatic all stock with the off road package and am thinking of going on a pretty tuogth trail to the top it is called captail peak anyways anyone has advice on how to keep from doing major damage and how their blazers faired off road? anything i need to know aheaf of time i have done small stuff but this will be my 1st real trail where it is mostly jeeps and toy's