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Learn computer science with online courses and programs

Learning computer science can lead to many career paths with high earning potential. Forge your way forward: Explore flexible options to learn computer science online.

Computer science skills are in demand across many industries, and they are likely to remain in demand for the foreseeable future. As a computer science generalist, you can build skills that transfer well across a variety of roles. You can also specialize in an area of personal interest, opening the door to niche careers.

Start your journey: Get familiar with the field and its many career pathways, and connect with personalized learning opportunities from accredited providers.

What is computer science?

Computer science focuses on applying computing, algorithms, and programming techniques to operating systems, artificial intelligence (AI), and informatics. Advances in machine learning, AI, and cybersecurity have led to growth in information technology.

Computers are used in nearly all fields of study and professions. Computer scientists create systems designed to understand big data structures, operationalize tasks, and innovate for the future.

As algorithms become more complex, the computer science field is expanding to include more subfields and concentrations.

Enrolling in an online course or degree program can be worth it to help you learn programming languages, explore principles of computer science, and gain new skills.

Why learning computer science matters

  • You can qualify for opportunities in a high-growth field: The Bureau of Labor Statistics (BLS) projects nearly 318,000 annual job openings in computer and information technology from 2024 to 2034.
  • By studying computer science, you can become a problem-solver in high-impact fields like healthcare, cybersecurity, education, urban development, and many others.
  • Learning computer science can help you qualify for valuable professional certifications that open doors to advanced careers.
  • You can develop future-proof skills likely to remain relevant in virtually any economic environment.
  • In a 2025 edX survey, 36% of leaders listed AI and machine learning as a top skill for career advancement, 25% listed software development, 23% listed cybersecurity, and 14% listed cloud computing — all skills that require computer science expertise.

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How to get started in computer science

The outset of your journey to learn computer science can feel daunting, but building a goal-oriented roadmap can help. You can follow these steps to get started in computer science with no experience:

1. Focus on foundations

Many computer science concepts draw heavily on logic and math. You can build strong foundations for computer science learning by ensuring you have solid knowledge in these areas.

Focus specifically on these areas:

  • Classical rule-based logic systems
  • Boolean logic
  • Algebra, calculus, discrete mathematics, and statistics

You can pursue many avenues for brushing up on your logic and math skills. Free, self-guided tutorials can help, especially if you already have background knowledge. You can also consider online math courses and programs for a more structured alternative

2. Consider a computer science boot camp or certificate program

Computer science boot camps are short, beginner-friendly programs that emphasize skills-based fundamentals. While some providers tout them as efficient and inexpensive ways to prepare for entry-level job opportunities, they typically focus on specific hard skills, like computer coding.

As an alternative, you can also pursue an undergraduate certificate in computer science. These pathways offer a deeper, more complete introduction to computer science. Some of your credits may also transfer toward a degree program, which may reduce both the cost and time you spend completing your education.

3. Enroll in an undergraduate degree program

An associate degree in computer science may suffice for some junior roles, but a bachelor's degree is generally considered the minimum level of education you need for upward career mobility.

In its August 2025 review of the 10 fast-growing computer science careers, the BLS lists a bachelor's degree as the required entry-level education for eight job titles. Bachelor's programs also offer specialization opportunities in computer science subfields, including AI, cybersecurity, data science, information technology, and many others.

4. Learn through practice

You can learn computer science through practice in many contexts. As a student, you can pursue personal projects or participate in coding challenges. As a computer science professional, you can take opportunities to learn new skills by collaborating with peers and taking part in any professional development programs your employer may offer.

The more you practice computer science — and the more technical concepts you expose yourself to — the more your proficiencies will grow. By pursuing continued self-guided development diligently, you can build a diverse and valuable skill set that employers value.

5. Continue with specialized or advanced education

Some labor market analysts and tech industry insiders have noticed that the computer science landscape is saturated with candidates who have similar credentials. Given the increasingly competitive nature of computer science jobs, differentiating yourself may pay off.

Potentially helpful strategies include:

To learn more, review edX's resource on the benefits of a master's degree in computer science.

How long does it take to learn computer science?

With regular practice and strong effort, you can learn coding and computer science basics in a few months. Complete, career-ready skills take longer to build: Four years is the typical timeline for earning a bachelor's degree.

edX offers many pathways to learn computer science, and you can find options for virtually any student profile. Consider these learning formats and their respective timelines:

Courses: 2–4 weeks

Certificates: 2–10 months

Executive Education: 6–8 weeks

Degree programs: 4–6 years for a bachelor's degree; 1–3 years for a master's degree

What careers can you pursue in computer science?

Computer scientists work in many industries to create digital systems that streamline operations. They may also develop new technologies, such as AI, that transform digital landscapes.

See common computer science career options below, including salary data from the BLS:

  • Computer programmer: Programmers write and test code in various coding languages, such as C++ or Java, to create and implement computer software and applications. They also assess the software to diagnose problems within the code.
    • Median annual salary (2024):$98,670
  • Information security analyst: Information security analysts work to secure networks, protecting private information from digital threats. They're responsible for addressing network vulnerabilities and developing security standards for employees who access the network.
  • Data scientist: Data scientists collect, organize, and analyze data to extrapolate trends. These trends can help business leaders adjust their plans, determine the effectiveness of a business decision, or discover new markets. Data scientists are also instrumental in AI and machine learning technology because they build the algorithms that AI models use to create probability outputs.
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    Frequently asked questions

    Can I learn computer science on my own?

    Yes, you can learn computer science through self-directed study by taking advantage of free or low-cost instructional resources, like video lectures and tutorials. Some employers prioritize hard, demonstrable skills over formal educational credentials, but you should consider validating the skills you gain by earning a professional certificate before entering the job market.

    Is computer science full of math?

    Computer science draws extensively on mathematics, but to describe it as "full of math" overlooks some key considerations. Many areas of computer science engage algebra, calculus, discrete math, and statistics, but the extent to which you will use these mathematical branches in your studies or job duties varies by specialization and role.

    Schools and programs also use various strategies to teach computer science, and some approaches involve less math than others.

    Will computer science be replaced by AI?

    Artificial intelligence appears positioned to automate some entry-level computer science roles, particularly in areas like coding and basic programming. However, fears that AI systems will completely replace human computer science professionals do not align with the expert consensus.

    Instead, AI will change the way computer scientists perform their research and job duties, rather than eliminating human roles.

    Is a computer science degree worth it?
    A computer science degree can help you qualify for high-paying, high-growth career opportunities. These programs also teach versatile and valuable technical skills that transfer well among many industries. From this perspective, a computer science degree often offers a strong return on investment.