Your momma probably told you a thing or two about how to get through every day life.  But mams had other things to do besides teach you everything she knows (which is everything).  Helpfully all those morsels of folk wisdom have been collected and are all databasified and searchable!

Look here:
http://www.rulesofthumb.org/

These thousands of rules are not just searchable, they're categorized!

On clothing:
"Never wear a hat that has more personality than you."

On shopping:
"The difference between a software salesman and a a car salesman is that a car salesman knows when he's lying."
(Which kind of sales slug does this really tell us more about...?)

For your next arctic expedition:
"If a polar bear charges you, dodge to the right. Eskimos say most polar bears are left-pawed."
(NB: "most")

Child-rearing is covered neatly:
"Never tell a child how a used-car dealer prices automobiles, how a butcher makes sausage, or how a Texas politician makes money."

The reader will note that I currently do _not_ own a boat!
"Never date a guy that owns a boat...it's too easy to hide the body."

Now, I think that this one's more of a guideline than a rule:
"Never sleep with anyone crazier than yourself."
At least it better be flexible.  And I ain't sayin that I'm particularly crazy...