John has provided some pretty good advice on a serious topic. Here In Australia, one of the good things the federal government does is to provide an alert service on current scams and issues. Its a subscriber service and I'm sure other countries will do the same. It might be worth investigating.
I use Trend Micro Titanium and that works for me. It comes with a firewall and that can need a little managing but is not difficult.
The earlier comment about smart TVs (internet enabled) got me thinking. While a virus for those devices is probably of less concern than a PC infection, there are other aspects that could be an issue. Imagine if someone managed to "update" your smart TV with a rogue software update that included code to monitor what you watch. I saw an article recently where a company used Facebook data to identify what people watched on TV and when. That data was allegedly used during the last U.S. presidential election to target TV ads.
One of the devices I like to use is a Kindle to read electronic books. When I later installed the Kindle software on my iPad, the software asked me if I wanted it to update the ebook reading positions on my iPad from my Kindle. Big brother may, or may not, be watching, but Amazon is.
A bit scary at times.
Trainz Interests: Content creation (locos and rolling stock mostly), script writing and, occasional tutorial writer.