There are many different aspects to digital marketing, and the best approach for a beginner will depend on their goals and resources. Some options to consider include:

1. Search Engine Optimization (SEO): This involves improving the visibility of a website in search engine results pages, with the goal of attracting more organic traffic. SEO can be a good starting point for beginners because it helps to build a foundation for future marketing efforts.

2. Social media marketing: This involves using social media platforms to promote a product or service. It can be a cost-effective way to reach a large audience, and is particularly useful for building brand awareness and engaging with customers.

3. Email marketing: This involves using email to promote a product or service, and can be an effective way to reach a targeted audience.

4. Content marketing: This involves creating and distributing valuable, relevant, and consistent content to attract and retain a clearly defined audience.

It's generally a good idea for beginners to start with just one or two digital marketing channels, and focus on mastering those before moving on to others. This will help to ensure that they are able to effectively track and measure their results, and make any necessary adjustments along the way.