They say it is more effective to show, than to tell. Why not do both? Video offers your audience a multi-sensory experience that is simultaneously educational, persuasive, and easy to digest. Better than reading a series of instructions, or referencing a collection of pictures and diagrams video explores, step-by-step, the subject that you are informing about.
Do your customers commonly call asking how to use certain functions of your product? Produce an easily accessible video for them answering these frequently asked questions.
Do you have courses that new personnel are required to attend, or weighty manuals for them to read through? Create a series of videos that can be used to convey this information precisely to each employee. Cut down on confusion, cut down on service calls. Allow education 24 hours a day, 365 days a year.
There is no better teacher than one that can lead you through each specific step, at any given time.