Just make sure to keep your qualifications and interests up to date. And be as specific as you can. This will attract recruiters to look at your profile and could maybe help you get a job that way. Connect with as many people as you can, sometimes people will find you on LinkedIn because you are connected to someone they are connected to. Maybe if you wanted to work at a specific company, you can find recruiters of that company on LinkedIn by searching, and try to connect with them?