Depends. There's absolutely fundamental knowledge in here that will help you learn and retain better. But a lot of it is out there already. I'd say it's a must

Depends. There's absolutely fundamental knowledge in here that will help you learn and retain better. But a lot of it is out there already. I'd say it's a must have because it's easy and helpful. It's organized so that it's easy to take. I guess that shouldn't be surprising.