Talk to my child about puberty and body changes

Help me talk with my child about puberty. Child's age: [AGE] What they already know or have asked: [DETAILS] What they've learned at school: [if known] My comfort level: [e.g. "very awkward", "fine but unsure what to cover"] Family values or cultural/religious considerations: [DETAILS, or "none"] Give me: 1. When and how to start: low-pressure settings (car rides, walks) and an opening line. 2. A list of topics for my child's age, in plain, correct language: body changes, hygiene, periods or erections and wet dreams as relevant, emotions and mood swings, privacy and consent, body image. 3. Simple, honest answers to likely questions, including awkward ones. 4. A practical kit to put together (e.g. deodorant, period supplies) and a hygiene routine. 5. How to keep the door open with a series of short talks instead of one big one. 6. Suggestions for types of age-appropriate books or resources to look for (no specific titles I can't verify). Respect my family's values while keeping information accurate. Suggest seeing the pediatrician if puberty starts very early or late for their age, if there's severe pain, or if my child seems very distressed about their body. If my child discloses any unwanted touching, tell me to stay calm, believe them, and contact child protective services or the police.