When searching for a review of a product an information product online be sure to watch a few youtube videos to get a better understanding of the goods.
Yes, a number of the review videos that are online are currently going to be fake, but these are usually easy to spot. Watch some and find one that shows the reviewer and knows all about the product.
Here is an example of a good one: https://www.youtube.com/watch?v=MgoVLlkoRV4&feature=youtu.be
So feel comfortable trusting online reviews, just be sure to watch ones which are clearly from respectable men and women.