• For books: Read the preface, introduction and after word. There you can find the audience for the book and the purpose of the author. Go over the contents and see whether there is a section that is relevant for your research.
• For the articles, the abstract is the most important part. You can decide whether you need this source or not by just reading the abstract. Moreover, most of the time the authors outline the article and state the main argument here.
• Check for the list of references at the end. This list can lead you to other helpful sources
• Pay attention to the intended audience and the purpose of the source because this information can help you to figure out how reliable the source is.
• While you are reading, try to find the answers to the questions listed for evaluating sources
• Read the headings and subheadings, since these will give you an idea about the structure of the article or chapter

the attachment below is from http://unilearning.uow.edu.au/reading/2b.html