You need to choose a niche when starting affiliate marketing. Your niche should be something you are passionate about or you have a great interest in. It should also have a demand for products. If there is no demand, it will be hard to make money from it. After choosing your niche, you must find affiliate programs. Look for programs with good products and commissions. Next, you need to create a platform. You can build a blog or website for your marketing efforts. You may also consider using social media or YouTube. Once your platform is set up, you can start promoting affiliate products. Focus on providing value to your audience. Consistency and patience are key to success in affiliate marketing.