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The Computer Science Book, Second Edition is an introductory computer science book for self-taught developers, rather than an online course in the traditional sense. It offers online chapters as well as PDF and EPUB ebooks, while the print edition is sold through Amazon. The site positions it as “the CS degree you never had,” with the core goal of helping developers who can already write code and ship features, but lack a systematic computer science foundation, fill in the gaps in their knowledge.
The book covers 13 chapters, ranging from logic fundamentals, computer architecture, operating systems, algorithms and data structures, networking, concurrent programming, distributed systems, programming languages, databases, and compilers, through to new Second Edition topics such as machine learning, deep learning, large language models, and AI. It emphasizes a “curated introduction”: not a thousand-page reference book, but a selection of key concepts for working developers, with Further Reading sections pointing to deeper resources. In terms of delivery, the content appears to be limited to books/ebooks and free article-style tutorials. We did not see live classes, recorded video lessons, assignments, quizzes, 1-on-1 tutoring, or a certificate.
The ebook costs $29 and includes both PDF and EPUB formats, with a 28-day money-back guarantee. Paperback and hardcover versions are available via Amazon. The author, Tom Johnson, is a senior FAANG software engineer who has worked at startups, investment banks, and major tech companies. He also comes from a self-taught background himself, which makes the content lean more toward practical engineering and filling knowledge gaps than a purely academic course.
The strengths are clear: it has a very well-defined target audience, making it suitable for people with programming experience whose knowledge system is incomplete; it covers a broad range of topics, and the Second Edition adds AI-related chapters that match current developer needs; pricing is transparent and backed by a refund policy. The drawbacks are also obvious: this is not an interactive course, so it lacks study pacing, Q&A, project review, and certification; the English-only content may be a barrier for some Chinese learners; and the print edition depends on Amazon, so the purchasing experience in mainland China may be uncertain.
It is best suited to self-taught programmers, engineers who have already entered the industry after switching careers and want to strengthen their CS fundamentals, and developers who want to understand the principles behind AI tools. It is less suitable for complete beginners, people who need Chinese-language explanations, learners who want strong interactive supervision, or those who need a credential. The page does not provide information about access from mainland China, and payment methods are not clearly stated. If access, payment, or English reading is a challenge, alternatives include CS50, OSSU, Teach Yourself Computer Science, Chinese university open courses, or platforms such as Geekbang.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on thecomputersciencebook.com official site.
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