Introduction to Computer Science
Computational thinking and the foundations of computing: the usual first CS course.
Computer science · from OpenStax
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Study computer science, step by step
From your first program to data structures, operating systems, networks and security. Every course is free, and each pack is built from an openly licensed textbook.
The Computer science pathway (28 courses)
Core courses that help come first, then the major courses.
Programming with Python (Think Python)
A gentle, widely used first programming book: variables, functions, loops, data structures and objects.
Computer science · from an open web textbook
Start studying freeProgramming in Java and Object-Oriented Design
Object-oriented programming in Java, from first programs to GUIs and data structures.
Computer science · from an open web textbook
Start studying freeWeb Programming with JavaScript
JavaScript from values and functions to the browser, the DOM, events and Node.
Computer science · from an open web textbook
Start studying freeData Structures and Algorithms: A Gentle Start
A gentler first pass at data structures and algorithms.
Computer science · from Pressbooks
Start studying freeProgramming Fundamentals
Language-neutral programming concepts with Java, C++, Python and C# examples.
Computer science · from LibreTexts
Start studying freeDeveloper Tools: Shell, Git and Debugging
The command line, version control, editors and debugging that courses assume you already know.
Computer science · from an open web textbook
Start studying freePrecalculus
Near 45 percent DFW at some campuses; the bridge into calculus.
Mathematics · from OpenStax
Start studying freeIntroduction to Programming (Python)
Introductory programming commonly sees 25 to 35 percent non-success; a gateway to computing majors.
Computer science · from OpenStax
Start studying freeAlgebra and Trigonometry
Combined algebra and trigonometry course that gates calculus for many STEM majors.
Mathematics · from OpenStax
Start studying freeData Structures
Lists, trees, hash tables, heaps and graphs, with the running-time reasoning that makes CS2 a well-known hurdle.
Computer science · from an open web textbook
Start studying freeDiscrete Mathematics
Logic, proofs, counting, graphs and relations: proof writing is new to most students.
Computer science · from an open web textbook
Start studying freeMathematics for Computer Science
Proof-heavy discrete maths from MIT: induction, graphs, number theory, probability.
Computer science · from LibreTexts
Start studying freeComputer Organization
Binary, the CPU, memory, the kernel and linking: how software meets hardware.
Computer science · from LibreTexts
Start studying freeOperating Systems
Processes, memory, files and threads: the concepts behind every operating system.
Computer science · from an open web textbook
Start studying freeComputer Networks
Protocols, routing, congestion control and security across the Internet.
Computer science · from an open web textbook
Start studying freeFull-Stack Web Development
React, Node, databases, testing and deployment for modern web applications.
Computer science · from an open web textbook
Start studying freeComputer Graphics
2D and 3D graphics: transforms, lighting, WebGL and three.js.
Computer science · from an open web textbook
Start studying freeComputer Security
Memory safety, cryptography, web and network security from Berkeley's CS 161.
Computer science · from an open web textbook
Start studying freeProbability for Computer Science
Probability spaces, random variables, expectation and distributions.
Computer science · from LibreTexts
Start studying freeCalculus I
Reported DFW rates of roughly 30 to 50 percent at several institutions; the most common first stop for STEM students who leave.
Mathematics · from OpenStax
Start studying freeCalculus II
Often 40 percent or higher DFW; where many engineering students stall.
Mathematics · from OpenStax
Start studying freeCalculus III (Multivariable)
Vector calculus and 3D visualization make multivariable topics a common stumbling block.
Mathematics · from OpenStax
Start studying freeLinear Algebra
Abstract vector-space reasoning is many students' first proof-flavored math course.
Mathematics · from LibreTexts
Start studying freeDifferential Equations
Many solution techniques to choose among; high DFW in engineering math.
Mathematics · from LibreTexts
Start studying freeComputer Systems Design
Principles for building reliable systems: modularity, networks, fault tolerance and security.
Computer science · from LibreTexts
Start studying freeProgramming Languages and Abstraction (SICP)
Abstraction, interpreters and language design from the classic MIT text.
Computer science · from LibreTexts
Start studying freeHigh Performance and Parallel Computing
Compilers, memory systems and parallel programming for fast code.
Computer science · from LibreTexts
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