Wall Street Prep's Accounting Crash Course?

Hi all, my work signed me up for Wall Street Prep's  Premium Package. I just started it and it said you need a basic understanding of accounting first, and suggested taking their Accounting Crash Course ($39).

For context I've been working about a year now, but it's been 4-5 years since I did accounting in uni and honestly I've forgotten pretty much everything, so I'm basically starting from scratch. Has anyone taken their crash course? Was it worth it, or is there something better? Also open to any cheaper or free options if anyone has recommendations.

Also this is my first time posting here, so if I am doing something wrong or should post elsewhere, please let me know.

Thanks!