Re: Protection -spyware, adware ??
I've run AVG with good results. It has a light footprint on the computer (does not use excessive resources). I like using Malwarebytes and CC Cleaner to remove spyware. Both Adaware and Spybot are legitimate and viable spyware programs as well. Be sure to keep them updated and make sure they are running regular scans, and you should be fine.