The very first thing to do is to let people know that your page exists. For this it is necessary to get what is called « I like ». This operation is vital, because later, when you start publishing photos, texts, information… the people who have « liked » your page will see your publications on their news feed. They may be able to « Share » and thus relay your content to their own community.
First, search among the people you know, those who have a lot of « Friends » on their personal page (thousands…). Don’t worry, this may seem like a lot, but it’s quite common among those who regularly use the social network. Just ask them if they can help you make your page known to their friends.
Most of them will be very happy to help you promote your start up. Once you have identified them and got their approval, go to your page and name the « Editors » (Settings > Page Roles). From their own personal page, they will be able to connect to your professional page and invite all their « Friends » to « Like » your page.
This operation will immediately boost the visibility of your page. Try to get between 300 and 500 « Likes » with a large number of fans. Repeat this operation several times with different people. You can keep them as « editors », but be aware that they will be able to modify your page, which you may not necessarily want.