As the others have said word of mouth goes a long way to finding someone. Ask around and see what others have to say about who is local to you if someone is good their reputation will tell, the same way that if someone doesn't give good service people will let you know.
Why don't you give us a try with your problems, we have quite a few seniors here, I'm one myself, and you will be sure to get good advice and no one will treat you as if you are stupid for asking simple questions, we've all been there and know that not everyone is computer savvy.
I hope you find someone or a service that meets your needs and welcome to our forum we'd love to see you visit more even if it's just for a chat.