What cultural faux pas should I try to avoid making in New Delhi?

"It is important to be mindful of cultural norms when visiting New Delhi. It is considered impolite to point with your finger, so it is best to gesture with your whole hand. It is also important to dress modestly, as revealing clothing is considered inappropriate. Additionally, it is important to be aware of the religious customs of the area, and to be respectful of religious sites and ceremonies. It is also important to be aware of the local customs regarding public displays of affection, as these may be seen as inappropriate. Finally, it is important to be aware of the local language and to be respectful when speaking to locals," mentioned another expat when asked about moving to New Delhi, India.