Cybersecurity is a sprawling field that can quickly overwhelm newcomers with its breadth and complexity. The 90DaysOfCyberSecurity repository on GitHub tackles this challenge by offering a structured, 90-day self-study curriculum that blends foundational theory, hands-on practice, and career readiness — all with free, externally hosted resources.
What 90DaysOfCyberSecurity offers and how it’s structured
This repo is essentially a comprehensive roadmap for anyone aiming to break into cybersecurity, especially beginners and career-switchers. It’s not a software project but a curated educational journey split into seven major domains. The curriculum begins with networking fundamentals aligned with CompTIA Network+ certification, then introduces core security principles via Security+, followed by Linux administration and Python scripting essentials.
Subsequent phases dive into practical traffic analysis using tools like Wireshark and Suricata, Git version control workflows, and log management with the ELK stack for SIEM (Security Information and Event Management) purposes. The roadmap also covers major cloud platforms — Google Cloud Platform (GCP), Amazon Web Services (AWS), and Microsoft Azure — reflecting the growing importance of cloud security.
The final stretch focuses on ethical hacking labs through platforms like Hack The Box and Vulnhub, culminating with career readiness materials including resume templates and job search strategies. The entire curriculum relies on free, well-established resources such as Professor Messer’s videos, Codecademy’s interactive tracks, Linux Journey tutorials, and Cisco’s NetAcad courses, making it a zero-cost entry point for serious learners.
The repository has garnered significant community traction with over 15,000 stars and contributions from multiple authors, indicating it has become a go-to structured guide in the cybersecurity education space.
Why this roadmap stands out and its practical tradeoffs
What distinguishes 90DaysOfCyberSecurity is its gamified, sprint-like approach to mastering a complex domain within a fixed timeframe. Instead of random tutorials or scattered advice, it sequences learning into digestible daily goals across interconnected topics. This structure helps maintain momentum and accountability — something self-learners often struggle with.
The roadmap’s reliance on well-known free resources is both a strength and a tradeoff. On one hand, learners get access to trusted content without paying for expensive bootcamps or courses. On the other hand, the repo itself doesn’t host content or code beyond the curriculum outline, so it depends on external sites remaining available and up-to-date.
The hands-on labs embedded later in the plan (Wireshark, ELK stack, Hack The Box) provide valuable practical experience, which is crucial in cybersecurity. However, these labs vary in complexity and require learners to independently manage tool installations and environments. The repo doesn’t provide integrated tooling or scripts to automate lab setup, which can be a hurdle for some.
Code quality as such isn’t a direct factor here since the repo is primarily a curriculum. That said, the documentation is clear, well-organized, and uses markdown effectively to guide users through each daily topic. The community contributions help keep it relevant and reflect real-world feedback.
The roadmap also includes career readiness, which is often neglected in technical learning paths. Providing resume templates and job-hunting tips acknowledges the end goal of many learners — employment — and adds practical value beyond pure technical skills.
Explore the project
Navigating the 90DaysOfCyberSecurity repo is straightforward. The main README.md outlines the full 90-day plan with daily tasks and links to the external learning resources. Each day’s entry links to videos, tutorials, or exercises hosted on sites like Professor Messer’s YouTube channel, Codecademy, and Cisco NetAcad.
The repo is organized by day and topic rather than code modules or executables. There are no installation commands or scripts to run; instead, learners follow the roadmap by accessing the curated resources online.
Additional folders and files provide templates for resumes and cover letters, plus links to ethical hacking labs and cloud platform learning paths. The community issues and pull requests sections are active, so learners can find discussions and updates or contribute improvements.
This repo is best approached as a disciplined self-study guide rather than a software toolkit. Bookmark the repo, plan your daily sessions, and leverage the external resources it points to.
Verdict
90DaysOfCyberSecurity is a solid, no-frills roadmap for anyone serious about entering cybersecurity without shelling out for bootcamp fees. Its strength lies in structured sequencing, curated high-quality free content, and inclusion of practical labs alongside career prep.
The main limitation is its dependency on external resources and the learner’s self-motivation to follow through. It doesn’t provide integrated tooling or automated environments, so some technical overhead is expected to set up labs and practice tools.
For beginners and career-switchers ready to commit to a 90-day sprint and comfortable navigating multiple external platforms, this repo offers a clear path to build foundational skills and confidence. It’s less suited for those seeking turnkey software solutions or guided instructor-led training.
Overall, 90DaysOfCyberSecurity is worth bookmarking as a community-vetted curriculum that balances theory, practice, and career readiness in an accessible, zero-cost package.
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→ GitHub Repo: farhanashrafdev/90DaysOfCyberSecurity ⭐ 15,520