Lesson Plan Organization

I found a calendar that I think I'm going to start using to make sure my lesson plans are in place. It's just Microsoft Outlook's Calendar and I'm going to have to get used to it but I think it will be better than Excel, which is what I was going to use before, because it's an actual calendar. I'm not going to be using the times on the side, however, for the simple fact that I don't know how long I'm going to need for each subject, but rather each hour of time will be a different school subject. Let me know if you have any other ideas but for now I'm going to see how this will work for us.