When looking for a good review of a product an information product online be sure to watch a youtube videos to acquire a better knowledge of the product.
Yes, some of the online review videos will be fake, but those are easy to spot. Watch some and find one that shows the reviewer using the product and knows all about the merchandise.
Here is a good example of a great one: https://youtu.be/UW6TT8OC1BI
So feel comfortable trusting online video reviews, just be certain to watch ones that are from people that are respectable.