Learning Platforms

• TryHackMe (Free Rooms)
• HackerRank
• HackerEarth
• PortSwigger (for Burp Suite)
• Acunetix

Important Websites

• WHOIS
• View DNS
• [More links to be added]

Vulnerable Testing Web Applications

• TestVulnWeb
• DVWA (Damn Vulnerable Web Application)
• Mutillidae
• Gin and Juice Shop
• OWASP ZAP

Capture the Flag (CTF) Platforms

• TryHackMe
• Hack The Box
• Proving Grounds

Security Conferences

• DEFCON
• BlackHat
• OWASP
• NullCon

Security Forums and Communities

• Stack Overflow
• Reddit - NetSec
• Discord - InfoSec Community