How I Use It
I use evernote for myself, and with my students. After showing the students around the program, they have been able to take notes, capture images and audio and gather research for their book reports. Rather than print out paper worksheets, I share the needed worksheet via evernote, and the students mark up the page on their iPad and save it back to evernote. This allows me to not only grade their papers electronically, but through the use of tags and folders, I can keep running records and grades on every student as well.
Evernote is a great tool for both teachers and students. If you are thinking about going paperless, this is the best way to do it. Students can upload files to shared folders, and the evernote servers make all the documents searchable (including text in an image!) It's very easy to use and you can customize it to your needs. Although it takes some time with the initial setup, it's value is beyond measure.