Tip 1: "Don't let them steal you blind"
Study the 3 images that follow and learn from it.
My tip to you: Don't sit idly by and concede matchpoints through inactivity. On the hand above, a double is preferred to bidding 1H as you could miss out on a better spade fit. DOUBLE guarantees the other 2 suits. Try and compete - even if you go one down you will still get a bushel of matchpoints.