Creating a social network like Facebook or Snapchat requires a range of technical and non-technical skills, as well as a deep understanding of user behavior and social dynamics. Here are some key areas to focus on if you're interested in building a social network:

1. Programming: A solid foundation in programming languages such as HTML, CSS, JavaScript, and PHP is essential for creating a social network. You will need to be able to build the front-end and back-end of your platform, as well as handle database management and server-side scripting.

2. User Experience (UX) Design: Designing a social network requires a deep understanding of user behavior and the ability to create an intuitive, engaging user experience. Familiarity with UX design principles and tools such as wireframing, prototyping, and user testing will be critical to your success.

3. Security: Social networks are prime targets for hackers, so it's important to have a strong understanding of security protocols and practices to protect user data. This includes implementing encryption, firewalls, and other security measures to prevent unauthorized access to your platform.

4. Data Science: Social networks generate massive amounts of data, and the ability to analyze and make sense of that data is critical to improving your platform and providing value to your users. Knowledge of data science tools such as Python and R, as well as machine learning algorithms and statistical analysis, will be helpful in this area.

5. Business and Marketing: Creating a successful social network requires more than just technical skills. You will also need to have a solid understanding of business and marketing principles, including market research, branding, user acquisition, and monetization strategies.

6. Legal: Social networks are subject to a wide range of legal requirements, including data protection regulations, copyright and trademark law, and liability issues. Familiarity with legal principles and the ability to navigate complex legal issues will be critical to your success.

Creating a social network like Facebook or Snapchat is a complex undertaking that requires a broad range of skills and expertise. It's important to start by developing a deep understanding of user behavior and social dynamics, and then build your technical and non-technical skills around that foundation. Working with a team of experts in areas such as programming, UX design, security, data science, business and marketing, and legal can also help you to create a more robust and successful social network.