What I'm beginning to notice is that most of ecommerce tutorials gloss over the research portion of finding products to test. Thus far, it seems like there's a plethora of detailed information on stuff like email marketing, conversion optimization, customer engagement etc which is great, I enjoy reading it but it's not actionable for me just yet.
At this point, I want to learn about piggybacking on existing niches, spotting trending products, doing keyword research on your own ideas. I don't want someone to just tell me a product that the market could benefit from, I want to learn how to do this myself.
Where can I find actual useful information on this?