Personally, I enjoy using Microsoft Word's Document Map and Microsoft Excel for details. It's all right there in one, easy to use (not so easy for beginners) program. My WIP has an event that takes place at a specific date. The events that lead up to it must be plotted into the story. Easy, you might say. Well, you'd be right if nothing ever changed or something never got mixed up or moved around. Since I never do those things, it's a piece of cake. Ha, I am the worse offender of rearrangement that ever breathed. I exaggerate, but you get my drift, I hope. So happy writing, my friends and until next time, God Bless.