What most naturally follows?

How to be a bondi lifeguard
Contact a surf life saving club in or close to bondi.
Just about anyone can volunteer to be a lifesaver at sydney surf life saving clubs. Surf clubs will be happy to chat to you and tell you what is required if you want to be a volunteer lifeguard.
Many will provide all the training you'll need. Call them, check out their websites or simply head down and chat to them.