7 Best Resources to Learn Cybersecurity: A Dev’s Journey from Zero to Hero

Source: Dev.to

When I first dove into cybersecurity, I felt like I was staring into a dense, uncharted forest. I didn’t know where to start, what to study, or how to get hands‑on experience. Over time, with trial, error, and some solid resources, things clicked. I want to share those exact resources with you—whether you’re a fresh dev, a system engineer, or a curious learner eyeing a new specialty.

1. Educative.io — The Interactive Playground

When I was prepping for my first cybersecurity role, I needed something interactive. Educative’s Grokking the System Design Interview helped me understand secure system architectures, but their dedicated Cyber Security Fundamentals course was a game‑changer.

Why I recommend it

• Interactive coding and labs – You don’t just read; you do. This makes abstract concepts concrete.
• Well‑structured curriculum – Covers fundamentals like threat modeling, encryption, and network security in digestible pieces.
• Immediate feedback – Keeps you engaged and aware of your progress.

Pro tip: Use Educative alongside a timeline. Set weekly goals, e.g., “Master encryption basics by Week 2.” This keeps momentum and avoids overwhelm.

2. OverTheWire — Real‑World Hacking Challenges

Theory is great, but nothing beats getting your hands dirty. OverTheWire’s WarGames challenges put me face‑to‑face with real security flaws — from basic shell exploits to advanced cryptography.

Why it stood out

• Stepwise difficulty – Starts easy, gets complex; suits beginners to pros.
• Community‑driven learning – Forums and write‑ups offer multiple perspectives.
• Immediate practical application – You hack actual systems in a safe environment.

Lesson learned: I still remember the “Bandit” challenge that taught me the power of Linux commands for security—such small commands, yet massive impact.

3. Cybrary — Massive Free Library

Cybrary is my go‑to for brushing up on certifications and deep dives. Their CompTIA Security and Certified Ethical Hacker tracks offer step‑by‑step guidance.

What I liked

• Rich video content – Keeps concepts digestible.
• Certification prep – Helpful if you want credentials validating your skills.
• Active forums and mentors – Great for asking questions and getting advice.

Pro tip: Pair Cybrary with flashcards or spaced‑repetition tools to lock in tricky concepts like cryptography algorithms.

4. ByteByteGo — Cybersecurity in Systems Design

I can’t overstate the value ByteByteGo’s System Design Course brought to my understanding of security at scale. They go beyond basics, dissecting how to build systems with security, privacy, and compliance baked in.

Highlights

• Visual diagrams – Complex architectures broken down into simple visuals.
• Security trade‑offs discussion – Scalability vs. encryption overhead? Latency vs. real‑time monitoring? They cover it.
• Interview‑focused – Perfect prep for FAANG and top tech companies.

Real‑world tip: When I applied the network‑segmentation principles ByteByteGo taught me, we caught a breach before it spread across our microservices.

5. Books: “The Web Application Hacker’s Handbook” & “Security Engineering”

Books grounded my understanding in both the hacker mindset and systemic security design.

• “The Web Application Hacker’s Handbook” by Dafydd Stuttard and Marcus Pinto – A classic that walks you through web vulnerabilities (XSS, SQL Injection) with real examples and defenses.
• “Security Engineering” by Ross Anderson – Dives deep into designing systems with security in mind.

Why read both?

• The former teaches you how hackers think and exploit.
• The latter teaches you how engineers foresee and prevent.

Personal story: Reading Stuttard’s book changed how I wrote code — suddenly I wasn’t just building features, I was building defenses.

6. Online Communities — Where Real Conversations Happen

Great resources only take you so far. Pair them with community conversations to gain nuanced perspectives.

• Reddit’s r/netsec and r/cybersecurity – Fresh news and discussions.
• Stack Exchange Security – Spot‑on answers for technical questions.
• LinkedIn groups and Twitter – Follow infosec pros for trends and real‑time debates.

Why this matters: I caught zero‑day vulnerabilities and mitigation strategies via these forums before they hit mainstream news.

7. CTFtime — Competitive Capture The Flag (CTF) Platforms

Once you master the basics, CTFs push you to apply your knowledge under pressure. I spent nights on CTFtime.org participating in challenges that simulated real attacks and defense.

Top benefits

• Diversity of challenge types – Reverse engineering, forensics, cryptography, and more.
• Teamwork and collaboration – Learn with or against peers globally.
• Continuous learning loop – Every event teaches new exploits and defense tactics.

Pro tip: Join or start a local or online security club — the shared experience accelerates learning.

How to Build Your Cybersecurity Learning Path

• Learn basics interactively (Educative, Cybrary).
• Practice real hacking in safe labs (OverTheWire).
• Deepen system‑design security understanding (ByteByteGo).
• Read foundational books (“The Web Application Hacker’s Handbook”, “Security Engineering”).
• Participate in CTFs (CTFtime) to apply skills under pressure.
• Engage with communities (Reddit, Stack Exchange, LinkedIn, Twitter) for latest trends and peer support.