Always good to have an adblocker on there. A lot of the viruses come from ads on the sites.
Also, good to have good anti malware programs, like Spyware Doctor, or MalwareBytes.
I highly recommend MalwareBytes. I got a virus, and that was the only program that could 86 it.
/BTW, the virus was from one of those damn LOL Cat sites, Not pr0n....