The document discusses various communication etiquettes including how to say "no" assertively, the importance of strong English language skills, the role of humor in the workplace, phone etiquette tips, general communication etiquette, proper dressing, and handshakes. It provides advice on improving English through reading, listening practice, and non-verbal communication. Specific etiquette tips are given for business phone calls, appropriate business attire depending on the occasion, and maintaining proper hygiene and dress. Case studies and exercises are also included to demonstrate effective communication.