There's a ton of stuff you can do! If you're a little creative and do it with passion you'll succeed!
The key to getting a bigger audience of facebook is working with a niche that you like!
If you choose a niche simply because you think it'll make you money, you'll eventually get bored.
However if you choose a topic which you really like, you'll get a double profit from it since you can create content about a topic you love and gather a facebook audience at the same time.
Once you've chosen your niche you MUST make content that will engage users! If people find what you're posting as relevant to them they'll either like it[, comment on it and ideally share it!
This is the KEY! If you don't want to blow your money on advertising then make sure you're posting content that your audience will be willing to share!
People seem to always undervalue the power of sharing content on Facebook, but that 1 share just got you an extra 200+ impressions on your content! 200 people who are not part of your page actually saw it on their new feed! If even 1% of those 200 likes your page, you just got yourself some free advertisement just from the quality of your content.
A really good way to get inspiration is by looking at other pages and seeing what they're doing. Many run contests, ask questions to their fan base, post quizzes etc. etc.
Try out many different methods until you find the one that works best.
Oh and also, use proper grammar and spelling! You'll loose a lot of credibility by not writing properly.