Shopify Product Page Setup

I’m putting the final touches on my Shopify store and need help completing the product pages for my physical items. The job is straightforward:

• Build or adjust a simple product-page template inside my current theme.
• Drop in the high-quality images and detailed descriptions I’ll provide.
• Activate a customer-review section using Shopify’s native features or a free, well-supported app.
• add drop down menus on navigation

No complex coding or custom integrations are necessary—just a clean, functional layout I can reuse for future products. Once the first page is done, show me briefly how to duplicate the setup across the rest of the catalog.