The first thing is to have a good company profile completed with every field.
You should clearly state the objectives, focus, highlights of the company.
Once it is done, your personal profile should also be completed.
You can start with linkedin groups where people will start joining the groups if the discussions are really relevant.
You can then offer free webinars/seminars or charge people a couple of dollars once your group has enough members.
This way, you can promote your business as well as boost your personal image.