Why not use facebook ads to drive traffic to your page with reveal tab. Can get lots of fans this way.
Keeping your page current and up to date. Also, interacting and engaging with other people. Getting your name out there!
If you will buy cheap likes, they will leave the page one day. I've done that and most of the likes I got are not there anymore. Do not buy likes. Get good information there and you will be good to go.
Remember that likes don't necessarily mean traffic to your posts, it just looks good, I have a Page with just 31 likes/fans and it gets 1000 impressions per day to the content, I have pages with 4k likes/fans and they struggle to get 1000 impressions per day/per article on page. So providing quality content and gaining natural traffic is far more benficial that gaining the likes/fans. I suggest putting more energy into content rather that exerting energy into likes or fans. the above saying is some real point here
Add more friends everyday , then invite them to like your page . also u can use this site twiends.com
Link to articles that are not from your site, and promote other peoples pages also. Can work wonders.
In all honesty, it may cost a little extra but you can get extremely targetted likes by using Facebook ads. The bonus is that if somebody likes your page based on your ad, all their friends see it and it helps to spread it more. Other options include clickjacking/viral videos etc.
That's not really an option to be honest, it's not worth it and is very very black hat. I wouldn't recommend this.