Sector councils and industry associations are excellent resources for industry specific information. These provide everything from labour market reports to job postings to networking opportunities. You might also find a directory of organizations and companies in the field, which is a great starting point for any job search. More than one association or council might apply to you depending on your interests: consider getting a student membership to reap the greatest benefits.
Your specific occupation of interest might also have its own professional association. Do a Google search or check out your career in Exploring Occupations.
Aerospace & Aviation
Agriculture & Food Science
Arts & Culture
Engineering, Geoscience, & Engineering Technology
Environment & Energy
Social Services & Non-Profit