Check out the official r/Shopify community on Reddit, where Shopify merchants, developers, and partners from the ecosystem come together and help one another.
A Facebook group with 13,000 members run by The Social Sales Girls, with the explicit purpose of teaching Shopify store owners on how to take their product-based businesses to the next level.
r/ecommerce is a subreddit for anyone interested in the operations of ecommerce websites. Ask questions, have honest and helpful discussions on marketing, seo, products, checkout, conversions, etc.
The perfect subreddit for Amazon FBA sellers to have mid to high level discussions about selling on Amazon.
VerumEcom focuses on providing high-quality training and resources for people looking to either start their first e-commerce business or take their existing business to the next level.
EcomHub's official Facebook group is for high-level discussions and all things Amazon FBA & eCommerce strategies.