Searching through the classifieds in a newspaper is the most common way to look for a job. You may find the job that will be perfect for you, but be aware that you will probably be competing against many other applicants. Some common newspapers which have extensive job listings are:
You can also find job vacancies listed in online gazettes. These are typically used by government. The Public Service Gazette is a source which provides listings of Federal government jobs. If you are considering applying for a position in the Public Service, Cracking the Code, can assist you with your application process.