Waiting for a Lost for Dummies Book AKA Does knowing whats going on make a difference

I love Lost, no I really do love it, It is possibly one of the greatest tv programmes of all time but alas I dont understand what the hell is going on.
I,m not a Lost theorist by anymeans, I,m happy to take it as it is but should I really care about the time-travel? should I really care about the Jack-Kate-Sawyer-Juliet hoopla? Should I really care that Hurley cant say a sentence without saying 'dude'?
Can you actually watch lost and enjoy the experience without taking it apart and analysing or is it just one of those shows you need to know what is going on after all?