Some of the content, courses and videos are delivered over a set period of time, usually daily. You can see on each course page when the next piece of content will become available.
I do this because I really want you to learn. Having trained thousands of people over the past 25 years I've learned that if I give out all the information at one time, most people will consume the content and never implement the techniques I'm trying to convey. This is supported by tons of scientific research in education.
He's a short video on the benefits of distributed practice compared to massed practice.
I know you're eager to learn and that awesome! I'm just as committed to ensuring you retain the information.