To become a biography writer, you should consider what you will need to know and be able to do in order to be a professional writer. While the book publishing industry is quite competitive, certain niche markets such as biographies can sometimes be easier to enter since there can be fewer of these types of books written each year than subjects like fantasy or mystery. You may want to get an educational background in a related field to become a biography writer. This means that if you want to write modern biographies, then you may want to have a degree in English or literature. A degree in history may serve you well if you want to be a historical biographer.
A biography writer is someone who writes books or short works that generally relate the life story of a particular person. These are often written for famous people such as actors, musicians, politicians, or religious and spiritual leaders. While memoirs seek to relate the experiences of a person often through personal details and a style of writing that may seem prejudicial or affectionate toward the subject, biographies are more often neutral pieces that commonly explore the weaknesses and mistakes of a person as much as his or her merits.
If you wish to become a biography writer, then you should focus on your abilities as a writer. Even the most interesting subject can be made unapproachable or dull if written about in a way that does not appeal to a reader. Similarly, the best writer can be rendered mute when attempting to write about a subject that he or she does not care about, so you should already have an inherent interest in history or people.
While formal education can typically help you develop your abilities as a writer, you may also want to consider more practical and active ways to make yourself a better writer in general and a biography writer specifically. You should read and write as much as you can. Take every opportunity to read. If you are interested in biographies, then read biographies, learn how other writers approach their subject and how you can use their techniques in your own writing.
Do not underestimate the importance of actually writing as you work to become a biography writer. When you are not reading, you should be writing. Just like any other skill or ability, you can best refine your own talents through continual practice. Try writing short biographical pieces for celebrities and see if you can get your work published in magazines or websites. Even if it is unpaid, every opportunity for you to hone your talents should be pursued.