AVG 2016 is a good antivirus program.

Its easy to use and it doesn't slow your computer down when it's scanning. AVG automaticaly updates itself, and you can schedule it to run whenever it's convenient. AVG runs in the background
offering users real-time protection against all types of malware. This download is for the free version. There is also a paid version for people who want a little more protection.

Malwarebytes is an excellent anti-malware program that removes even advanced malware and spyware. It performs fast and effective scans. Every computer user should have a copy of this software on their desktop. When you open Malwarebytes, make sure you click on the update tab at the top before you perform a scan. The free version has to be updated and run manually by the user. It does not perform scheduled scans. It’s good to use if something suspicious pops ups or your PC starts acting weird.

Microsoft Security Essentials - This antivirus program is provided by Microsoft and it's free. This program works just as well as any other antivirus software. There are plenty of free and paid antivirus programs but if you're going to use a free version then this is the best one because you won't get annoying nag screens that prompt you to purchase the paid version because there is no paid version. Of course no antivirus program can completely secure your computer against malware whether it's a free or paid version.

Dell Drivers - Dell has a downloads page that provides all drivers for Dell computers. This is very useful if one of your drivers get dropped or corrupted. It's also useful if you have to reinstall your operating system. You can type in the service tag from the bottom of your computer or you can type in the model number and the appropriate drivers will come up in a search result for you to download.

HP Drivers - HP also have a downloads page that supplies all of the HP drivers you might need to install on your HP computer

Java - Your computer won't run very well without Java. This software is free and comes in a 64-bit and 32 bit version.