Many e-Commerce merchants have this common challenge by explaining how to use a complex product. The more the user understands the product, the more likely they would make the purchase.
Co-Z is an Amazon merchant that specializes in inflatable hot tubs. They offer a very innovative product. However, it is a big-ticket item and requires users to read many page-long how-tos before getting interested. A short video that explains major functions in many different languages helped them improve the purchase conversion rate.