If you are the admin of a page in Facebook, you can use the page as Facebook. This literally means that when you log into Facebook, you will be shown the page instead of your profile and all your likes for page will be still available. You will receive notifications when people interact with your page or posts. You can also keep up with the other pages you’ve liked through a newsfeed just for your page. To use Facebook as page, you need to be admin of the page. Open the page and on the right hand sidebar, you can see a link “Use Facebook as [your page name]”.
Click on the link and you can see your Facebook home as the page you just selected.
When using Facebook as a page, all actions that you take while using Facebook as your Page will appear on Facebook as coming from your Page. For example if you comment on an image or a post in Facebook, it will be posted as page and not from your profile.
At any time you can shift back to your Profile by clicking the “Switch back” link available under Account.