EcomHub's official Facebook group is for high-level discussions and all things Amazon FBA & eCommerce strategies.
Join the r/Dropship subreddit community to discuss the business of dropshipping, from the entrepreneur side of the table. It's a great place to share resources, solve problems and have serious discussions on issues that other entrepreneurs face.
While not specifically about ecommerce, r/smallbusiness is a great place to ask questions and learn from others who are starting, owning and growing a small business.
Join the official Slack community for Shopify Partners such as app developers, theme developers, Shopify agencies and other ecosystem partners who work towards enabling merchants. It's a large and active community of people all across the world, and is also the official channel for Shopify Partner Townhalls.
Run by Steve Tan, this Ecommerce Facebook group is super active and busy with over 100,000 members. Discuss genera eCommerce, Shopify/Magento tips, Facebook Ads, Social Media Marketing, information about Product Sourcing, Fulfillment, Traffic and Conversion.
Check out the official r/Shopify community on Reddit, where Shopify merchants, developers, and partners from the ecosystem come together and help one another.