Advice: When ever possible do not work with people who are two generations older then yourself. They know everything and you know nothing, and yet they will constantly ask you questions to which they will ignore the answers.
Quote of the Day: "Customers are idiots, it's your job to make them feel like geniuses. Now go help that jackass that's coming into the store." My father
Bonus Advice of the day: While most of us like to think we're handy in some sort of way, and I'm sure we are. When there is a profession that specializes in the repair/job you're doing chances are you have no fucking clue what you're doing, so don't act like you do.