Granny Geek is Karen Lahey, Karen has been developing software since 1972. She really is a granny and will happily show you pictures. Don't get her started. Since she understands how programs work, she can figure out how your programs work, even if she has never seen them before.
But she also understands that computers are just a tool. Not understanding how to use computers doesn't mean you are not capable. It just means that you haven't used this tool. Her goal is to teach you those things that you want to be able to do with your computer.