Diggit Drupalextras

I recently downloaded and installed node picker with all its components, I am using CKEditor and not sure how to use it. From the images it looks simple but I do not see a new button on my CKEditor for it. I went ticked all the check boxes but still not sure how to use it. when i highlight some text and click on the link button and i browser server all I get our my images. Any help would be most appreciated.