Age equals wisdom. Always greet elders first. In homes, touch the feet of parents/grandparents (called Pranam ) as a mark of respect. You are not expected to do this as a foreigner, but a polite "Namaste" is appreciated.
Welcome to India.
In street markets, the first price is 3x the real price. Politely ask "What's your best price?" and be ready to walk away. In malls and government shops (e.g., Khadi Gramodyog), prices are fixed. Lisa.Frankenstein.2024.1080p.BluRay.DesireMovie...