If you're promoting products such as Relationship Ebooks, Self-Help Ebooks or anything related to improving one's life then follow the example below.
Step by step on how to easily promote your product on Facebook:
1. Use Google to search for image quotes or sayings:
2. Find sayings and save it to your computer. - Right Click image - Save image as
3. Once you've downloaded the image, upload it to your facebook timeline or page with description and ofcourse your product link. See example below.
Caution do not over do it because you're friends or followers might think you're spamming them - they would probably hate that.
You can send / upload images at random time.