One of the most frustrating things that can happen to a declarer is to have several good tricks in dummy (or in hand), with no way to get in and cash those tricks.
One of the places I most often see confusion at the bridge table is in the use of the redouble. Precise use of the redouble will significantly improve your contracts and consequently your results.
The first big advantage of the defenders is the opening lead. Opening leads can be a source of immense profit (or loss) as well as one of the most entertaining and challenging aspects of the game.
Sacrificing is an art rather than just a Bridge skill. Beginning Bridge players sacrifice too much in IMPS giving the opponents a “fielders choice” of doubling rather than take their iffy games.
Your RHO opens a 12-14 notrump. Holding Kxx/Kxx/Kxxx/Kxx, I think you would pass. Assuming you're playing penalty doubles of weak notrumps, what are...
He realised that the main chance of developing the two extra game-going tricks in time was to play hearts for four tricks. If the hearts were 3-3 then any sensible play would have brought in a total of four tricks.