Most editors have at least one university degree and many editors have years of experience working for organisations that produce publications, where they have generally reaped the benefits of in-house training. Some editors have specific qualifications in language, linguistics, writing or editing. Many use their specialist knowledge to edit technical, trade, scientific or educational publications.
Formal courses or units in editing (at undergraduate or postgraduate level) are offered by many tertiary institutions. See Education and training for courses in Western Australia and other states.
If you are thinking about starting up as a freelance editor, we advise that you get training and reliable business advice. Become an active member of your local branch of IPEd to avoid the professional isolation faced by many freelancers. Our branch is a part of a national mentorship program that offers one-to-one guidance.