Your First Note!
Now you're ready for the most important part of Evernote...the notes! Click on the "New Note" button in the menu bar and a note will be added to your default notebook (remember, you can always drag it to another notebook at any time).
The note can either be double clicked and brought up in its own window, or simply edited in the viewing pane on the right. When I'm taking notes for a class and have the professor's lecture slides open as well, I find this first option most handy.
By default, the first thing you write in the note will become its title. If you like, you can edit the title, notebook, tags, and links in the top part of the viewing pane.
One great feature is the addition of images to a note. Simply drag any image into your note and it will automatically resize to fit your viewing window. This is a great way to annotate notes from a class or presentation with the graphics used by the presenter. If you "Open with" command the image and edit it in something like Paint or Photoshop, the edits will be carried through to your note!
Lastly, you can clip images directly from your screen with the clipping tool (accessed by hotkey or by right-clicking the Evernote icon in the notification area).