Unique self-introduction . Welcome here...
you are never too old for learning new stuff. I have been using Linux just a few years. Still considered to be a newbie although I am 41 years old. And about you literature question:
Don't be scared with amount of pages. Just pick up what you are interested in and read. I have found this Linux bible just week ago and it looks pretty sufficient for my needs. Enjoy
thank you for the link i look forward to the read