Digital marketing is a broad term that refers to any marketing efforts that use electronic devices or the internet. There are many ways to make money online through digital marketing, including:

1. Affiliate marketing: This involves promoting other people's products and earning a commission for each sale made through your referral.

2. Blogging: You can start a blog, attract a large audience, and earn money through advertising, sponsored content, and affiliate marketing.

3. E-commerce: You can sell products or services directly through your own website or through marketplaces like Amazon, eBay, and Etsy.

4. Social media marketing: You can help businesses reach a larger audience by managing their social media accounts and creating paid social media campaigns.

5. Email marketing: You can build an email list and send newsletters or promotional emails to subscribers, earning money through advertising or sales of products or services.

6. Online course creation: You can create and sell online courses on platforms like Udemy or Teachable.

7. Freelancing: You can offer your digital marketing skills as a freelancer and work with clients on a project-by-project basis.

There are many other ways to make money online through digital marketing, and the best approach for you will depend on your skills and interests.