Bob Rankin provides insight and online help for non-geeks. You can find a lot of information on his site about computers, and even smart phones.
Start by checking out this article:
Seven Free PC Maintenance Tools
Do you need some help and would like other members to help you out? Just Comment to this post and our members may be able to advise you.
Or if you would rather get advice through email about some additional information on these tools, send an email to: firstname.lastname@example.org