My purpose here is to suggest a trail through this article:

1. Skim and annotate if strong need to do so.
2. Read Abstract more closely. You can respond in the margins with questions.
3. Read Tables. Respond with questions, observations, links, images, videos.
4. Close read the body of the article. Annotate.
5. Follow up on references.

You can, of course, ignore these suggestions or do them in any order or just randomly work your way through the publication. You can (and I have done this before) read the article backward. One of the purposes of social annotation is to collaborate toward deeper understanding. Make it so using any tools you might have learned in your life.