Experience has been my teacher concerning advertising of apps. I wish I could say that I nailed it on my first try, or second, or even third. Thankfully, I learn from my mistakes, because I made every advertising mistake one could before I became adept at using advertising effectively. One seemingly sound source of advertisement advice is ad agencies. They will likely contact you, pitching ad campaigns that are too good to be true. I fell for this a few times. I ran a massive campaign with one of these agencies and saw no increase in sales. I wasted thousands of dollars; I can tell you that something like that leaves a really bad taste in your mouth. After hearing over the years from all the fellow developers and appreneurs who have made the same mistakes, I am a little less embarrassed. By reading this book, I hope you can profit from our blunders and not have to go down the same path;I hope you can gain insight from my experiences and run successful advertising for your app on the first try!