That is a very good reading, I sure would not worry about it.
No you have two different kinds of cholesteral the good and the bad if your doctor says there is nothing to worry about don't worry but if you still feel concerned just talk to your doctor and ask him to explain it to you
I think the doc would know what is high and what is not. but if your worried about it, just change your diet. probably wouldn't be a bad idea anyways.
No, 117 is not high. That is a decent reading. Why would you think that was high?