The document provides advice for various life situations and problems people may face using the phrases "should/had better". It suggests people had better pay bills on time, dress appropriately for occasions, make reservations at popular restaurants, catch their transport on time. It also advises recharging devices, ironing clothes before important events, reading terms carefully before signing contracts, and bringing umbrellas in case of rain. The document also uses sample sentences to practice using "had better" with different verbs.