You surely thought of it yourself - (below is what I do usually in my commercial research planning)
1) what you need to review (subject of article, book etc.)
2) what the journal is about (industry and sector)
3) Who read the journal (students, businesses, government etc.)
4) how others approach the issue/similar review in previous studies, which you can usually see it in the actual book/article you are going to review
Hope that helps.
Good luck (up)