One helpful thing you can do before reading any book of the Bible is to try to form a tentative but informed idea about the content and historical context of the book. What was going on that caused the author to write the book? What was the author’s goal in writing the book? What is the attitude of the author? What are the main ideas he wants to communicate? Is there a flow or a structure for the material in the book? Finding the answers to these sort of questions can make it easier to track with the main themes and storyline of each book.
This is why I recommend reading (or watching) Bible book introductions. Many Bibles will contain short introductory essays before good books. These are often very short, yet they contain good information. It can also be helpful to consult the introduction section of a commentary. One of my favorite resources is the Bible Project book overview videos. These short videos provide a helpful visual of the books’ structure and main themes.
Always remember the information you learn from book introductions should be viewed as “tentative” until you are able to verify their information with your own study. So while book introductions are helpful, make sure to jot down your own brief notes as you study the book for yourself. What does the text itself reveal about the recipients? The author’s attitude? The specific occasion of the book? Never stop studying for your own answers. But when you are just getting started, book introductions can be very helpful.