Even though I'm not familiar with that particular program there are some generalities which may help you decide whether you want to participate or not.
Every time you put your shoulder to the wheel and try to improve your cooking skills, you will improve your cooking skills. What could it hurt?
It's one-size-fits-all video instruction. You have to ask yourself if you're the type of person who benefits from that or not. "Some people like it, others not so much. The first lesson is "knife skills," a subject poorly suited to the one-size-fits-all approach, one which particularly benefits from the opportunity to ask questions as well as instant feedback from someone observing as you struggle to unlearn bad habits and incorporate good ones. If you try that lesson and it really helps you, you've not only improved your knife skills but discovered how well you learn from video pedagogy.
The first month is free, so why not? Just make sure to cancel before the subscription is "automatically" assigned to your credit card.
There are other, relatively inexpensive, but in-person ways to learn. Consider the "Free University," community college, "adult education," and classes offered by cooking equipment stores. There you not only get live instruction, but the opportunity to interact with other people. Another nice thing about "live" cooking classes, you get to eat.