Bug bounty programs

• Bugcrowd
• Hackerone

Tutorials

• Hacker101
  • Newcomer's Playlist
  • Burp Suite Playlist
  • CTF - note: requires a hackerone account
  • All videos
  • Syllabus
• Graceful security - hacking web apps
• Network basics
• Common ports
• Linux basics
• OWASP guide

Online web apps

• OWASP's Juice Shop
• Zero Bank from Micro Focus
• List of web apps

Virtual Machines and downloadable apps

• xvwa
• OWASP's WebGoat
• Hackxor by albinowax

Info/Misc

• Arman Hardikar's mindmap
• The art of hacking