No legal office could stay afloat without an administrative assistant to schedule meetings, organize files, and communicate with clients. If you're interested in a legal career that requires minimal professional training, consider becoming a legal administrative assistant. While some law offices hire secretaries with no formal training, you may be able to earn more, and find jobs at larger firms, if you earn certification from the National Association of Legal Secretaries. Many schools offer online courses that can help you prepare for the certification exam.