When searching for a review of a product, especially an info product online be sure to watch a youtube videos to acquire a better knowledge of the product.
Yes, a number of the review videos will be fake, but these are usually easy to spot. Watch some and find one that reveals the reviewer and definitely knows all about the merchandise.
Here's a good example of a great one: https://youtu.be/b46lYPVp_Jw
So feel comfortable trusting online reviews, just make certain to watch ones that are clearly from people.