Need Help(Can you provide some specialized books?) - Shareasale Affiliate

My website is a website selling pet supplies. I have been running Shareasale for 3 months now. I am getting only 30+ traffic per day from SAS. Monthly sales are $200+. I set a lot of commission rules. I invite a lot of Coupon and Pet sites to join my affiliate battle every day. I set up a lot of campaign images. But it has been 3 months without any boost. I don't know what to do next. Can anyone provide some professional books? I can go and study.