Tip 1:
Never tell any body that you are a hacker even your friends or your relatives,you must keep it a secret

Tip 2:
Never hack without a proxy

Tip 3:
Never let FBI enter your house without a search warrant.

Tip 4:
Never hack from your home always use net cafe for these purposes

Tip 5:
Wave to cops

Tips 6:
Never use your real name in any sort of conversation or in any signup

Tip 7:
Do not keep a password which is already present in the dictionary

Tip 8:
Dont use same password twice

Tips 9:
Never hack from the same computer twice if possible

Tips 9:
Hide your Ip address to avoid your chances of being traced

Tips 10:
Always use a Good firewall such as zonealram

Tip 11:
Change your Ip address daily if possible,I have wrote an article on How to change your Ip address

Tip 12:
Dont enter your personal information eg your address,your number etc while
Using social networking sites like orkut,Facebook etc

Tip 13:
Always have a panic button that mass deletes your questionable content

Tip 14:
Never let the FBI in period.

Tip 15:
Always use a Proxy when doing anything remotely illegal