Firstly login to http://facebook.com/advertising then follow the below mentioned steps:
1. Select the landing page i.e destination tab where your ad will points to.
2. Choose a suitable title for your ad. let makes it an eye-catching.
3. Make an ad copy of the body of your ad. compile ad to promote it.
4. Select a suitable image for your ad.
5. After that preview your ad and make changes if needed.