Cultural Etiquette Guide for International Travel

I'm traveling to [destination] for the first time. Please provide a comprehensive guide to local customs, etiquette, and cultural norms I should be aware of. Include information about: 1) Appropriate greetings and gestures, 2) Dining etiquette, 3) Tipping practices, 4) Dress code expectations (especially for religious sites), 5) Taboo topics or behaviors to avoid, 6) Common phrases in the local language that would be helpful to know, 7) Gift-giving customs if I'm visiting locals, 8) Business etiquette if applicable, and 9) Any other cultural nuances that would help me show respect and avoid unintentional offense.