That's good, 8 hours is good for your health. I like to sleep maybe 6+ hours, so last night was unusual.
What you said about my age was kind, thank you. I think Johnny Depp, Brad Pitt etc are lucky, they are all handsome guys and look good for their age (except Robbert Downey Jr!). I look old and feel it.
Don't worry about guitar chords, I don't know any! Just experiment. That is how I learn. I never had a guitar lesson in my life. Hold down some strings and try different things, you will be surprised. It's more fun too.
Do you use 'soundcloud.com'? Also, do you write your own songs sometimes?