Here is a sampler of items that a Google search revealed:

• How to read a scientific paper Michael Fosmire, Purdue University Libraries
• How to read and understand a scientific paper: a guide for non-scientists Jennifer Raff,, LSE blog
• How to read a paper S. Keshav, ACM SIGCOMM Computer Communication Review
• Art of reading a journal article: Methodically and effectively RV Subramanyam, Journal of Oral and Maxillofacial Pathology
• How to (seriously) read a scientific paper Elisabeth Pain    ScienceMag.org