Hello.
I recommend you to install
Hitman Pro and
Emsisoft Emergency Scan Kit. In fact, without those two in your PC, you're most likely to be infected again.
Then, you can install the following add-ons in your browser.
Lastpass.
HTPS Everywhere.
PrivacyBadger.
If you do not know the basics of computer science, you should browse the "Tips, Guides and How-To" section.
Again, if you want to be fully protected, you should install ESET Smart Security 7 instead, BETAs aren't good.
You should also try
TinyWall. (Firewall, it beats ESET's Firewall and is user-friendly)
I also recommend you
Rollback RX (if you've got the money).
If not, I recommend you
AOMEI (haven't tried personally, looks shady but good)