1. Read a lot, and each time more and more, going deeper into the subject matter, getting acquainted with / learning relevant schools, scholars, followers, etc.
2. Analyse, compare / contrast the received data.
3. Make conclusions after receiving the findings that prove the hypotheses true / false.
May, there are some of us don't know what is the meaning of review articles. Review article, also called a literature review, is a survey of previously published research on a topic and it should give an overview of current thinking on the theme. The objective of a literature review is to provide a critical evaluation of the data available from existing studies. Review articles can identify potential research areas to explore next and sometimes they will draw new conclusions from the existing data.
In my opinion, the important tips for writing review articles it summarized in the following
He should Provide a comprehensive foundation on the topic.
He should Explains the current state of knowledge.
He should Identify gaps in existing studies for potential future research and highlight the main methodologies and research techniques.
Define your scope and topic of interest, find sources to evaluate, conduct a thorough literature review, write a concise and informative abstract, define gaps and include critical discussion.