This group by Justin Cener is a general purpose ecommerce group with over 50,000 members where you can learn about dropshipping, influencer marketing, and using FB ads to build an online business.
The official Facebook group run by WooCommerce with 35,000+ members is a place for store owners, managers, WordPress developers, and WooCommerce enthusiasts on Facebook to connect, share ideas and inspiration, provide each other with support, and empower each other to build and grow their ecommerce businesses.
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.
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.
Run by Jonathan Kennedy of HeyCarson, Shopify Entrepreneurs is one the largest and most active ecommerce communities on the internet. With over 100,000 members, join this community to talk about all things ecommerce across every kind of topic.
Powered by Privy, the Ecommerce Marketing Community is a group designed to let you connect with other founders growing their brands from $0 to $1 million in sales. Join in early as this private group is yet to cross 1,000 members.
