I started proofreading in university and really enjoyed it; continued it in a publishing house and then went abroad to do it. I taught for 20 years in Asia. It was so rewarding to help students from elementary to university level learn and use vital information to help them read, write and speak well in English. After coming back home, I decided to upgrade my credentials by taking the General Proofreading Theory & Practice course. Doing an in-depth study of Chicago Manual of Style (CMOS) has really helped me to understand and use English grammar even better for my clients.