Networking
How computers talk to each other — TCP/IP, DNS, HTTP. Required for any backend or security role.
Protect networks, applications and data from attacks and security breaches.
Cybersecurity engineers find weaknesses in systems, set up firewalls and access controls, monitor for intrusions and respond when an attack happens. They use vulnerability scanners, penetration testing tools, logging platforms and scripting, and they review code and network designs for flaws. Entry is usually a bachelor's degree in computer science or IT, or IT experience plus a certification such as Security+.
Take these courses in order, from beginner to mid-level.
The shared base every STEM career uses: working with numbers and units, testing ideas fairly, handling data and code, and explaining your work.
The everyday computer, internet, safety and AI skills every tech and STEM job assumes you already have.
Write clear emails and documents, present and run meetings, work well on teams, and navigate résumés, interviews and networking.
The practical math behind tech and STEM work: numbers, algebra, functions, geometry, logic and counting, with short code exercises.
Use the terminal with confidence, track your work with Git, and collaborate on GitHub with pull requests.
Learn to program in Python from zero: values, decisions, loops, functions, data structures, files, modules and a small data project.
Learn how data moves between computers: layers, IP addresses and subnets, ports, DNS, DHCP, HTTPS, and the tools to troubleshoot it.
Understand tech roles and career ladders, pick a realistic learning route, build portfolio evidence, and navigate postings, interviews and your first 90 days.
Think like a defender: network attack surface, threat modeling, the OWASP Top 10, core controls, identity, cryptography, frameworks and the rules of ethical testing.
Run a Linux server with confidence: users and permissions, services, packages, logs, SSH keys, bash scripts and scheduled jobs.
Run day-to-day defense like a SOC analyst: logging and SIEM hunting, IDS alerts, incident response, triage, forensics, vulnerability management, hardening, cloud posture and MITRE ATT&CK.
How computers talk to each other — TCP/IP, DNS, HTTP. Required for any backend or security role.
The terminal — how programmers automate tasks and run tools without a graphical UI.
Authentication, authorization, encryption, common attack patterns. Defense in depth.
A beginner-friendly, general-purpose language popular in data, AI, and scripting.
Breaking big, vague problems into small concrete steps. The most transferable skill in tech.
Hand-picked courses and reading from trusted free providers.
Beginner cybersecurity path covering networking, web, Linux, and Windows fundamentals.
Free MIT lectures on the tools real engineers use every day: shell, Git, editors, debugging.
Harvard's free intro CS course — widely considered one of the best on-ramps to programming.
Automate software builds, deployments and monitoring so teams release safely.
Build the pipelines that collect, clean and store data for analysis.
Install, secure, back up and tune the databases that store company data.