Especially an information product online make certain to watch a couple of youtube videos to get a better knowledge of the goods, when looking for a review of a product.
Yes, a number of the review videos are going to be fake, but those are easy to spot. So watch some and find one that shows the reviewer using the item and knows all about the product.
Here is an example of a great one: https://youtu.be/zkU6G-_IiBs
So feel comfortable trusting online reviews, just make sure to see ones that are clearly from people that are respectable.