As you search the literature it is vital that you record what you find. Researchers commonly create what is known as an annotated bibliography that provides the documents complete reference and a short summary and evaluation of the article. The annotated bibliography can be used later to develop a literature review.
Annotated bibliographies and literature reviews differ because an annotated bibliography is a list of articles and summaries whereas a literature review is a prose narrative that discusses research on a particular topic.
The main purpose of a narrative literature review is to provide an overview of the topic and to highlight significant areas of research. Literature reviews and annotated bibliographies can help to refine your research questions.