I have used many different ways to try and keep my classes organized. It became a lot more difficult when I used technology to blend my classroom with online learning.
Hands-down, the best method I found was using an online Learning Management System. The one I found worked the best for me was Schoology. Here is my screencast on how I keep things organized. I hope it helps you keep your blended course organized!
I made a step-by-step guide on how to format your own course from disorganization to organization. You can read about that in more detail here.