I mentioned here in another topic that I have been using Bitdefender as my security suite for many, many years. It is always rated at or next to the top of the list for internet security.
In my internet travels I've often found myself being led into less than desirable websites. But I never have problems with my computer.
I have used Malwarebites, Search and Destroy and CC-Cleaner (mentioned by others in this topic) on friend's computers when they have got themselves into trouble.
I would recommend all of the above. I prefer to use both the Disk Cleanup (which comes pre-installed with all versions of windows), as well as Wise Care 365 (free download) to keep my system clean and running smooth.
I highly recommend using Bitdefender. It comes with specialized software for doing your internet banking called Safepay. One item Safepay uses is a virtual keyboard, where you are protected from keylogging, which attempts to get your passwords, etc as you type.
Bitdefender also comes with a number of other apps to help keep your computer safe. Bitdefender also lets me install it on up to 5 devices, including my phone (Android).
Note: My only complaint is the local Aussie provider of Bitdefender charges 1/3 to 50 percent more than the parent company in Norway. SO, I always renew my subscription via the parent company website.
I will only ever use my phone for talking and texting. And just like my computers, I've never had a problem.
Finally, if you use Facebook, don't ever click on adds or game recommendations or those silly quizzes friends like to send around. Many of my friends have had their Facebook pages hacked and the common denominator in each case - they had all clicked on either an add, game recommendation or quiz prior to the hack.
Cheers.