How to start in cybersecurity

Security rests on solid basics: networks, Linux and how systems fail. Hands-on practice labs matter as much as theory.

Good for: Curious beginners who like how computers work. Typical time: 150–200 hours in total, depending on where you start.

The usual order of steps

1
Networking basics≈ 30 h
IP addresses, DNS, HTTP and how data travels.
2
Linux basics≈ 25 h
The command line and file permissions.
3
Security fundamentals≈ 30 h
Threats, passwords, encryption and common attacks.
4
Hands-on labs≈ 40 h
Practise in safe, legal training environments.
5
Entry certificate preparation≈ 40 h
Prepare for a beginner exam if employers in your country ask for one.

Free or paid?

Many good courses for each step are free; paid ones usually add a certificate, feedback from a teacher or a fixed schedule. Check the current price, dates and age limits on the provider’s own site before you pay.

Where to look for courses

Search these platforms for “Cybersecurity”. Compare ratings, prices and the date of the last update before you choose.

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The hours are rough, typical figures, not promises. Plans are made by AI and may contain mistakes.