Bidding is dynamic and styles change over time. This revised edition of Play Bridge: A Guide by Your Side reflects the most modern bidding styles.
The guide still features a summary of the basics so you may check this guide a nytime you are playing bridge and not sure of the right bid or play. However, it has been updated to include major changes - when responder shows their own suit at the two level, they need an opening hand and the 1NT response has been widened slightly to encompass two bidding ranges, 6-10 and 11-12.
These improvements make the bidding, especially with a strong responding hand, a lot easier.