The people in your networks can help you find job vacancies, and might be able to refer you for positions. They can only do this if they know what industry and occupations you are interested in!
Talk with your networks about your career planning and what you are looking for. Make it clear whether you are looking for apprenticeship or traineeship positions only, or if you would be interested in other types of opportunities such as work experience. Ask your networks to let you know if they hear about opportunities, and whether they know any employers you could get in contact with.
You can continue developing your professional networks by attending industry events, or by making connections through social media. These are valuable ways to meet potential employers, and to find out more about the industry or occupation you are interested in.