Having an awareness of the various processes involved in taking a video from an idea to a finished product will help you to plan your project as thoroughly as possible in advance. This will help you to optimise your time and will improve the overall quality of what you produce.
Everything before the shoot:
Idea / Script / Storyboard / Shot List / Logistics / etc
Everything during the shoot
Shots / Batteries / Memory / Audio check / Camera check / Settings / Communication / Direction / etc
Everything after the shoot
File management / File backups / Editing / Exporting / File check / etc