Mr. Guarino recommends the following programs:
Avast free antivirus: It is free for PC's, MACs and cell phones. On a computer it not only protects from all types of malware but Avast free antivirus also comes with a scanner that checks for and updates outdated programs like java, flash, chrome, etc. It really is a wonderful free program to protect your devices from malware.
CCleaner free: Mainly it is a registry cleaning and compacting program which speeds up boot times and reduces silly errors. It has other features as well like disabling programs and services that start with your computer. By disabling nonessential programs and services you can further speed up your boot time and increasing overall performance.
Teamviewer free: A great way to connect to and control a remote computer, for free.