I just gave this entire thread another read through, and it somewhat reminds of real estate agents. 20% of the affiliates are making 80% of the money out there. It is so hard to estimate what any one individual will make as an affiliate.
If your new the best thing you can do is find some good mentors who have mastered this business and will take you under their wing. Don’t expect to get all their trade secrets right away or ever for that matter. But if you can develop some key relationships with people in this industry and be a professional, ethical, and respected member in the online gaming industry you will find it is much easier to be successful than trying to go at it alone.