$50 Facebook coupons:

FB Success program

They offer $50 coupons to new advertisers

- Go to this URL https://www.facebook.com/business/start2success

-Fill in the form with the data from fakenamegenerator.com and you own data (for email)

Read their rules!

Facebook offers coupons through partnership with other companies as well:

1) First option is to get it from hosting companies like Fatcow, Hostpapa...
Example with Hostpapa:

- You have this URL where you can request coupon as their member: HostPapa – Facebook Ads Credit Coupon Redemption

They have cheap memberships and you can get the coupon that way. After that, just cancel the membership and get your money back.

2) There are also companies like Wix, Shopify and 3Dcart that offer $50 coupons. You can use their trial offer to get the coupon and then cancel the membership. Important: Make sure that a company offers 'money back guarantee', so that you can get your money back.