If you're looking for a fantastic overview of a product an information product online be sure to watch a couple of youtube videos to acquire a better understanding of the product.
Yes, some of the review videos are currently going to be fake, but those are easy to spot. Observe a few and find one that definitely knows all about the product and preferably reveals the reviewer.
Here is an example of a great one: https://www.youtube.com/watch?v=MgoVLlkoRV4&feature=youtu.be
So feel comfortable trusting online video reviews, just make sure to watch ones which are clearly from men and women that are respectable.