Video editing takes a lot of time and resources, and as such, it is important to establish a proper workflow that promotes efficiency. If you are new to video, check out this comprehensive look at a professional's video editing workflow.
Coming to you from DSLRguide, this helpful video will show you his video editing workflow. Video editing can be more involved than editing stills simply because of the size of the files and processing power involved, especially if you are working on a longer project. As such, it is important to set yourself up for maximum efficiency and to keep things organized and easier to manage. One simple trick that has always helped me is to rename my files before I import them. When I have a bunch of files with incomprehensible names of random letters and numbers, it can be really annoying trying to keep track of all of them and know what to put where. Giving them descriptive names makes a big difference. Check out the video above for lots of helpful tips.
And if you would like to continue learning about video, check out "Introduction to Adobe Premiere: A Video Editing Tutorial With Lee Morris" and "Introduction to Video: A Photographer's Guide to Filmmaking With Lee Morris and Patrick Hall!"