Russell Allert said
1 year, 4 months ago: @dennischica Facebook ads work! And very well.
Best way is to start experimenting with them. Keep the daily budgets low until you see what works. And keep using what does work.
Make sure your images are compelling. This is really important as it will attract the eye. Using faces is a good way. But it also needs to fit with what you are advertising.
Write good copy. Go to CopyBlogger and learn from them. And make sure you provide a call to action in the copy. (Something as simple as “Apply Now” will do)
Keep your own spreadsheet track of how well ads are going and how they do. I do this fairly manually but this helps me know what is working and what isn’t.
Use a combination of broad and targeted audiences. This will depend on what you are advertising and who your target audience is.
Don’t have an ad run for any longer than 2 days in a row. The drop off rate after this time is HUGE!
Experiment lots!
Hope that helps!. 
Russell Allert