I've read that on the average it takes about a couple hours of daily dedication for a month until you see true success. The caveat is take into account risk vs reward. You'll learn of free online services you can use and subscription services that offer paid incentives in these videos. What I like is that you don't necessarily need to use paid services to start. You'll use search engines, social media, and Youtube to reap your rewards. Like all businesses there is a learning curve so one should be aware that if your not careful in following the steps outlined here you could loose your initial investment. Which if you go into it with a small amount at risk the experience alone will make up for it when you fix your mistakes and go at it again. So re-watch the videos until you get it and take plenty of notes!
Now as to your comment on traffic it is true, traffic is important. But the truth is, acquiring traffic is easier than converting it. Plus we have many posts dedicated to traffic generation on this blog. Simply check this post, this post or this post. But must importantly, the reason why people struggle with traffic is that they try to promote a sales page or a heavily biased piece of content. Nobody wants to share that, nobody wants to link to that, and as a result you don't get traffic and blame your lack of success on traffic (like you did in your comment above).
Ask for VIP (sometimes called “tiered”) commissions. Many affiliate programs have different commission levels. Usually the standard commission level is made public, but higher commissions are offered to higher performing affiliates. Sometimes you may be bumped up to “VIP affiliate” status by the advertiser, but most times you have to ask if there’s a higher tier and how you can get there.
I loved seeing the example of the Kids Tablet with Wifi utilizing affiliate marketing. It gave me some great ideas on integrating amazon for my own children’s blog. I would be interested in knowing how much they are earning monthly from their affiliation. Being a mother of a two year old myself, I could see myself writing reviews on Amazon products my daughter enjoys.