Looking back at when you first started trying to sell your products online, it may be hard not to cringe. If only someone had given you a heads up about the nuances and hurdles of e-commerce, many a mistake might have been avoided.

We asked a roundtable of ChannelAdvisor’s seasoned experts what advice they’d give online sellers right out of the gate. Whether you’ve recently launched an online store or have been in the e-tailing business for years, these lessons are invaluable.