Professor Messer

Professor Messer provides free, high-quality video training for IT certification exams including CompTIA Security+, Network+, A+, and more. Instructor Jason Messer is widely respected in the IT community for clear, focused exam prep training. Courses cover study guides, practice tests, and detailed video tutorials covering every exam objective.

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Professor Messer

CybersecurityIntermediate

CompTIA Security+ (SY0-701) Certification Course

Professor Messer's free CompTIA Security+ (SY0-701) course consists of 121 videos totaling roughly 15 hours, covering every exam objective: threats, identity and access, cryptography, network defense, and incident response. If you're planning to take the Security+ certification exam, this is the de facto industry-standard free study resource used by thousands. It's designed for IT professionals or students with networking knowledge already (Network+ level) pursuing the Security+ credential. The limitation: it is exam-prep-shaped and focuses on passing the test rather than building hands-on labs. The exam itself costs money.

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Judging Professor Messer on its own only gets you so far. Each page below puts it head to head with one other platform on cost, certificates, and how deep the free material goes, and every one of them ends in a pick rather than a shrug.

They run in order of how much subject matter the two platforms share, so the near-substitutes for Professor Messer come first and the ones that barely overlap sit at the end. Each card names what the other platform is best at, which is usually enough to tell whether the comparison is worth your time.

Professor MesservsMicrosoft LearnMicrosoft Learn: C#, .NET, and Azure with hands-on sandboxes Professor MesservsTryHackMeTryHackMe: Hands-on, gamified cybersecurity practice Professor MesservsCisco Networking AcademyCisco Networking Academy: Networking fundamentals and Cisco certification prep Professor MesservsfreeCodeCampfreeCodeCamp: Free verified certificates through a full project-based curriculum Professor MesservsThe Odin ProjectThe Odin Project: Learning to work like a real developer from day one Professor MesservsMIT OpenCourseWareMIT OpenCourseWare: Self-directed learners who want raw MIT course material Professor MesservsCourseraCoursera: Recognizable industry certificates (Google, Meta, IBM)Professor MesservsDeepLearning.AIDeepLearning.AI: Short, focused AI courses from Andrew Ng's team Professor MesservsGoogle for DevelopersGoogle for Developers: Practical web, Android, and ML content from Google Professor MesservsHarvard CS50Harvard CS50: A rigorous, university-grade intro to computer science Professor MesservsKaggle LearnKaggle Learn: Picking up one data skill at a time, fast Professor MesservsCodecademyCodecademy: A smooth, zero-setup first taste of a language Professor MesservsKhan AcademyKhan Academy: Absolute beginners and younger learners Professor MesservsScrimbaScrimba: Frontend learners who like coding inside the video Professor MesservsAnthropicAnthropic: Building with Claude: prompting, tools, and MCP Professor MesservsFull Stack OpenFull Stack Open: Modern React and Node once you can already code Professor MesservsHugging FaceHugging Face: Hands-on NLP, transformers, and AI agents Professor MesservsedXedX: MIT and Harvard course material without the tuition Professor MesservsHacking with SwiftHacking with Swift: iOS and SwiftUI beginners who want a daily plan Professor MesservsAndrej KarpathyAndrej Karpathy: Understanding neural networks from the ground up Professor MesservsAWS Skill BuilderAWS Skill Builder: Cloud fundamentals and AWS certification prep Professor MesservsBoot.devBoot.dev: Backend and Go learners who want structured projects Professor Messervsfast.aifast.ai: Getting deep learning working before the theory Professor MesservsMDN Web DocsMDN Web Docs: Web development reference and foundational learning

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