Since OneNote is a digital note taking app, you're not only going to take new notes, but you want them to be easy on the eyes as well as organized. One really easy cool way to do that is by using page colors, page lines and page grids. This is ESPECIALLY helpful if you are using a touchscreen and/or stylus. This can help make the digital note taking experience more like the paper note taking one.
Once you LOVE the look of your page whether that be color, lines, grids or some combination of these - you need to get information on the page. If you're simply typing information, that's pretty straight-forward, but much of what you might need to get on a page in OneNote might be somewhere else - could be on a web page, could be in an email, could be in a Word or Excel file.
You can insert/attach a file on a OneNote page much like you can attach a file to an email, the icon is even the same.
Lots of times we are trying to keep track of information we find online, OneNote is an awesome way to do that. Whethere it's a restaurant you want to try, a recipe you want to make, a camera you are researching or a prospective client's website or bio - you want to find it again. You can also copy screenshots or text or images right from your browser and paste into your OneNote page to keep track of it.
Alright - go to it - go make your pages colorful and full of lines, insert files and copy and paste! ENJOY!