Audiences: You can create them in various ways. The first 2 options above are iffy because facebook could flag them asking where you got the data to upload. But works really well. When you create an ad, and you want to change something : ONLY change daily budget or max budget for a campaign. Changing anything else will screw up the optimizing that facebook does. The optimizing happens in the first 5-10 days of running your ad. If you want to change anything else, Pause your current ad, and duplicate it and make your changes It will then start the Optimizing part from facebook over