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Here's 23 ways to learn Docker for free:

1. Runnable, Slash Docker — Blog.
2. Docker, Docker 101 Tutorial — Blog.
3. Online IT Guru, Docker Tutorial — Blog.
4. Tutorials Point, Docker Tutorial — Blog.
5. Andrew Odewahn, Docker Jumpstart — Blog.

30 cybersecurity search engines for researchers:

1. Dehashed—View leaked credentials.
2. SecurityTrails—Extensive DNS data.
3. DorkSearch—Really fast Google dorking.
4. ExploitDB—Archive of various exploits.
5. ZoomEye—Gather information about targets.

It’s hard to find good podcasts about cybersecurity.

In fact, I’ve listened to loads (trying to find the good ones).

Here are my Top 3:

• @DarknetDiaries
• @MaliciousLife
• @HackingHumansCW

What's your favourite podcast?

Trying to break into cybersecurity?

Embrace focus.

• Focus on a specific skill.
• Focus on a specific role.
• Focus on what you enjoy.

You'll progress much faster this way.

Here are 26 cybersecurity YouTube channels:

1. Infosec Institute — Cybersecurity awareness.
2. Black Hat — Technical cybersecurity conferences.
3. Bugcrowd — Bug bounty methodology & interviews.
4. InfoSec Live — Tutorials & interviews.

Anyone with an Internet connection can get into cybersecurity with nothing but a laptop:

@cybraryIT is free.
@rootme_org is free.
@LetsDefendIO is free.
@hackthebox_eu is free.
@RealTryHackMe is free.
@OverTheWireCTF is free.

The resources are already out there.

Mastering cybersecurity is knowing you'll always be a student of cybersecurity.

23 free resources to learn about API security testing:

1. Video: Traceable AI, API Hacking 101.
2. Video: Katie Paxton-Fear, API Hacking.
3. Video: Bugcrowd, Bad API, hAPI Hackers.
4. Video: OWASP API Security Top 10 Webinar.
5. Blog: Detectify, How To Hack API's in 2021.

Here are 27 ways to learn ethical hacking for free:

1. Root Me — Challenges.
2. Stök's YouTube — Videos.
3. Hacker101 Videos — Videos.
4. InsiderPhD YouTube — Videos.
5. EchoCTF — Interactive Learning.
6. Vuln Machines — Videos and Labs.
7. Try2Hack — Interactive Learning.

8 pieces of free software for cybersecurity enthusiasts:

1. Training: Hack The Box
2. Curated News: Feedly
3. Web Hacking: Burp Suite
4. Data Modification: Cyber Chef
5. Port Scan: Nmap
6. Operating System: Kali Linux
7. Debugging: Ghidra
8. Email Security: DeHashed

Here's a list of 43 cybersecurity YouTube channels:

1. Hak5 — General cybersecurity coverage.
2. The XSS Rat — Everything bounty hunting.
3. ITProTV — General cybersecurity coverage.
4. Infosec Institute — Cybersecurity awareness.
5. Cyrill Gössi — Extensive cryptography videos.

30 cybersecurity search engines for researchers:

1. Dehashed—View leaked credentials.
2. SecurityTrails—Extensive DNS data.
3. DorkSearch—Really fast Google dorking.
4. ExploitDB—Archive of various exploits.
5. ZoomEye—Gather information about targets.

Anyone with an Internet connection can get into cybersecurity with nothing but a laptop:

@cybraryIT is free.
@rootme_org is free.
@LetsDefendIO is free.
@hackthebox_eu is free.
@RealTryHackMe is free.
@OverTheWireCTF is free.

The resources are already out there.

Introducing 25 ways to learn Python for free:

1. Think Python — Free Ebook
2. Think Python 2e — Free Ebook
3. A Byte of Python — Free Ebook
4. Real Python — Online Platform
5. Full Stack Python — Free Ebook
6. freeCodeCamp — Online Platform
7. Dive Into Python 3 — Free Ebook

PSA: There are competent people in cybersecurity that don't have a social media presence.