Overview
This page contains all the curated learning resources from the 90 Days of Cybersecurity study plan. Resources are organized by topic to help you find exactly what you need for each phase of your learning journey.Certification Prep
Network+ and Security+ study materials
Hands-On Skills
Linux, Python, and practical labs
Security Tools
Traffic analysis and SIEM tools
Cloud & Hacking
Cloud security and ethical hacking
Network and Security+
- Network+ (CompTIA)
- Security+ (CompTIA)
Video Courses
Professor Messer’s N10-009 Playlist- Complete video series covering all Network+ objectives
- Watch on YouTube
- Recommended for Day 1-7
Professor Messer’s courses are highly regarded in the certification community and are completely free.
Practice
- Complete related practice questions and exercises after each section
- Focus on understanding concepts, not just memorization
Linux and Python
Linux Resources (Day 15-28)
Linux Resources (Day 15-28)
Interactive Tutorials
Linux Journey- Beginner-friendly Linux fundamentals
- Interactive browser-based learning
- Start Learning
- Structured course with hands-on labs
- Free certification upon completion
- Enroll Now
- Practical, real-world Linux exercises
- All labs are free to access
- Access Labs
Python Resources (Day 29-42)
Python Resources (Day 29-42)
Courses and Tutorials
Codecademy - Learn Python Track- Interactive Python programming course
- Hands-on coding exercises
- Start Course
- Mobile-friendly interactive Python course
- Bite-sized lessons with community support
- Start Learning
- Python.org - Official language documentation
- Real Python - In-depth tutorials and articles
- Talk Python to Me - Podcast for Python developers
- Learn Python the Hard Way - Exercise-based learning
Practice Platforms
HackerRank Python- Coding challenges to test your skills
- Start Practicing
- Free hands-on Python labs
- Access Labs
Video Course
The Cyber Mentor - Python for Cybersecurity- Practical Python for security professionals
- Watch on YouTube
Traffic Analysis and ELK
Traffic Analysis (Day 43-56)
Traffic Analysis (Day 43-56)
Wireshark Resources
Wireshark University- Official Wireshark training and educational content
- Access Course
- Comprehensive beginner’s guide
- Read Tutorial
- Wireshark Tutorial for Beginners
- Complete series covering packet analysis
TCPdump
TCPdump Tutorial - Daniel Miessler- Command-line packet analysis
- Read Guide
Suricata IDS/IPS
Suricata Resources- Network IDS/IPS Tutorial - YouTube video guide
- Suricata on pfSense - Implementation guide
Traffic analysis skills are crucial for security monitoring and incident response roles.
ELK Stack (Day 64-70)
ELK Stack (Day 64-70)
SIEM and Log Analysis
Logz.io ELK Stack Tutorial- Complete ELK Stack Guide
- Covers Elasticsearch, Logstash, and Kibana
- Elastic Stack Features
- Official documentation and tutorials
The ELK stack is one of the most popular SIEM solutions used in enterprise environments.
Git Version Control
Codecademy Git Course
Structured Git fundamentals course
Git Immersion
Hands-on Git tutorial
Try Git
Interactive Git learning
Learn Git Branching
Interactive Git CLI simulator
Recommended timeline: Day 57-63. Git is essential for version control and collaboration in cybersecurity projects.
Cloud Platforms
- Google Cloud Platform (GCP)
- Amazon Web Services (AWS)
- Microsoft Azure
Day 71-77: GCP Resources
Official Documentation- GCP Getting Started - Comprehensive onboarding
- GCP Documentation - Technical documentation
- GCP Blog - Latest updates and best practices
- GCP Community - Community support
- Google Cloud Skills Boost - Interactive labs and challenges
Choose One Platform: You only need to learn one cloud platform during Day 71-77. All three are valuable in the job market.
Ethical Hacking
Day 85-90: Hands-On Hacking Practice
Hack the Box
Realistic penetration testing challenges
VulnHub
Downloadable vulnerable machines for practice
Video Courses
The Cyber Mentor - Ethical Hacking SeriesPart 1: Foundations
Ethical Hacking Part 1 - Core concepts and methodology
Part 2: Advanced Techniques
Ethical Hacking Part 2 - Advanced exploitation and post-exploitation
Career Resources
Resume Building (Day 91-92)
Resume Building (Day 91-92)
Resume Templates and Guides
Cybersecurity-Specific Templates- BowTiedCyber Resume Template - Industry-focused template
- Indeed Cybersecurity Resume Guide - Professional advice
- Resume-Now Cyber Security Template - Includes sections for skills, certifications, experience, education, and technical skills
Job Search (Day 93-95)
Job Search (Day 93-95)
Additional Resources
Portfolio Creation
Build a professional cybersecurity portfolio
WordPress Portfolio Tutorial
Host your portfolio on DigitalOcean
Cyber Talents
Cybersecurity competitions and challenges
Ready to Start Learning?
Go back to the Introduction to begin your 90-day journey