The most important requirement for becoming an English proofreader is, of course, a strong command of the English language. If you're a native speaker or have near-native proficiency, that's a great start. However, even if you're not a native speaker, there are still plenty of opportunities to become a proofreader.
There are a few different ways to become a proofreader. One option is to take a course or certification program specifically in proofreading. These programs will teach you the specific skills and knowledge you need to be a successful proofreader.
Another option is to take a general editing or writing course. While these courses may not be specifically focused on proofreading, they will still give you the basic skills you need to be a successful proofreader.
In addition to taking courses, another great way to become a proofreader is to get experience. You can start by volunteering to proofread for friends, family, or local organizations. Once you have some experience under your belt, you can start applying for paid proofreading jobs.
If you're serious about becoming a proofreader, there are a few resources you can check out. The Proofreading Academy offers an online course specifically for people who want to become proofreaders.
The U.S. Bureau of Labor Statistics has information on the median pay and job outlook for editors, which includes proofreaders.
And Finally,Property of The Writer's Workplace & Writing Careers, has an article that covers everything you need to know about becoming a proofreader.