The Kaplan-Sheinwold Bidding System is the most popular bidding system among modern tournament players. Among the advantages are everybody knows it so you do not have to make out a long bidding card. You can just write "Kaplan-Sheinwold" on your bidding card. No need for further explanation. You can easily make and form partnerships. Everybody will agree to play this system. It is easy to learn. All you have to do is read this book. You will know everything you need to know to play at and even win bridge tournaments.