The best skill for affiliate marketing is digital marketing. You should understand how to drive traffic to your website or landing pages. SEO knowledge helps your content rank higher in search engines. You must also know how to create persuasive content that converts. Building an email list is another important skill. You should learn how to engage and nurture your subscribers. Social media marketing is crucial for promoting affiliate products. You must understand how to build relationships and trust with your audience. Data analysis skills will help you track your performance and optimize strategies for better results.