NOTEBOOK - SMART Notebook File is a wonderful file extension that you can use for various adventures. You can use it if you are a teacher more than anything because it allows you to actually create classroom materials that you can use for lecturing. You can also use this extension for images, video, and all other types of audio which you can be used when you really need it the most. You can use this file right along with Notebook Express which is hosted by SMART tech. It is good for storing all of your notes and sharing different lessons with students. It does come in handy for these purposes plus a lot more. They are also extremely easy to handle.