Good question! The best incentive to offer new affiliates is your time, attention, and guidance when and if they want it. Their choice. When they want it, get back to them as quickly as possible with the help they need.
You have been in their shoes. When they realize that you truly want to help them succeed, they feel confident that they can come to you with their questions, lack of understanding (they are NEW--this does take time, effort, and knowledge gained), fears, and successes.