I would consider three valuable marketing skills to be considered.
1. First and most important is Persistence/Perseverance. You should accept that you invested $100 in order to get 100 PSA and none of them is interested to become a Fast Track Member. And none of them is ready to become an EA even after one month of reading SFI articles. You should continue in spite of lack of results. "Never give up" attitude is popular on this forum.
2. Second is Communication. And this is linked with your ability to make Duplication. When you can communicate with your affiliates and they are listening to you and they are copying you then you are successful in Duplication. And finding the right words, the right time to communicate and to be convincing is an art and a valuable skill.
3. On the third place I would consider the Technical skills. Affiliates should be aware of building a blog, writing an article, publishing a banner, attracting traffic on the blog, managing a list of affiliates and many other technical skills. You should take your time and introduce them one by one. More Technical skills in online marketing you get, less money you will spend on marketing activities and most effective you will become. It will take some time.
I would consider three valuable marketing skills to be considered.
1. First and most important is Persistence/Perseverance. You should accept that you invested $100 in order to get 100 PSA and none of them is interested to become a Fast Track Member. And none of them is ready to become an EA even after one month of reading SFI articles. You should continue in spite of lack of results. "Never give up" attitude is popular on this forum.