Choose a specific niche. It's best to find what people enjoy.
Hobbies & pastimes – Find what a lot of people like, and make a Facebook page out of that.
Entertainment – These are the ways people are entertained. This includes activities such as sports, movies, TV, internet, reading, theater, etc.
Humor – People enjoy laughing. Find funny pics and jokes to keep your page running.
Causes – many people are passionate about causes, ideas, and charities they believe are important.
Health – more and more, healthy living and lifestyles are significant to people. This would include everything from fitness and exercise to diet and nutrition.
Money – People are interested in money. If you have a Facebook Tips for Money page, you'll get likes.