a few tips i have
1. Do not ever visit porn sites unless you have an account for them, they are full of malicious shit
2. Dont ever click yes on a box that says "blahblahblahblah Inc, etc. dont ever click "yes" on those click NO unless you know for positive that it is safe.
3. Do not ever, ever, visit any "hacking site" because they are tottaly fucking up your comp with any "hacking" program you download sure the program might work but its still fucking you over.
4. use zonealarm.
5. Dont be an idiot. Be smart dont fucking accept or click yes on anything you think is wrong because it probably is.