Over at Figmeant, I have a series of articles related to keeping track and organizing your writing ideas.
Keeping Track of Ideas When You Are Out of the Office deals with different ways of logging your bursts of inspiration when you are no where near your writing office.
When You Are In The Office deals with the different ways you can organize your ideas to make them more manageable.
When It’s A Team Effort talks about how to stay organized when there is more than one writer working on the project.
I hope you find these articles useful in keeping your ideas from becoming the unmanageable mess that mine often did.
Good luck and happy writing 
