Basic E-Commerce Site Build

I need a simple, working online store set up from scratch.
The core goal is to get a clean, mobile-friendly storefront live quickly so I can start selling right away.

Scope
• Build and configure the store on whichever platform you feel is most efficient—Shopify, WooCommerce, Magento, or another solid option. I’m flexible as long as the basics run smoothly.
• Enable three must-have features:
– User reviews
– Payment gateway integration (major cards and PayPal at minimum)
– Inventory management with straightforward stock updates
• Apply a lightweight theme, add a few sample products, and show me how to add more on my own.
• Hand off a brief step-by-step guide covering daily tasks such as adding items, processing orders, and updating inventory.

I’m aiming for a lean first release, so focus on the essentials over heavy customisation. Clear, well-commented configuration and timely communication are more valuable to me than elaborate design extras.