http://www.sandboxie.com/ along with antivirus. This is your browser condom when visiting risky website. It would reset your browser back to what it was after use and also will not let things gets pass it into the rest of your computer.
https://www.malwarebytes.org/antiexploit/ for extra defense from getting viruses.
https://www.malwarebytes.org/antimalware/ good free program for 2nd opinion scanner.
For free antivirus go with Bitdefender, for paid go for Kaspersky or Bitdefender.