For your E Commerce products to rank, detailed long product descriptions are very important. The video gives you some hacks, tips and insights into how to research product content and how to write it so you achieve better SEO results. Using this hack you do not need any prior knowledge about the products.
Remember to get go SEO, do not use the manufacturers product descriptions, do not verbatim copy of sellers description either. Google is smart and you will not rank well. Write original content of 300 words or more and include your keywords in your text.