A good blend of education and experience will get you started as a copywriter. You need at least a bachelor's degree in a field like journalism, english, or communications. If your writing is focused on a specific subject, like biology or cars, you will want to be well versed in those subjects. Experience can come from writing in high school and college for school papers, internships or other programs. Copywriters often need a portfolio of work to show their writing abilities and the scope of their proficiency.
