diff --git a/README.md b/README.md
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@@ -371,6 +371,7 @@ performance of any of your sites from across the globe.
:small_orange_diamond: Julia's Drawings - some drawings about programming and unix world, zines about systems & debugging tools.
:small_orange_diamond: DEF CON Media Server - great stuff from DEFCON 26.
:small_orange_diamond: BGP Meets Cat - after 3072 hours of manipulating BGP, Job Snijders has succeeded in drawing a Nyancat.
+ :small_orange_diamond: HTTPS in the real world - great tutorial explain how HTTPS works in the real world.
+ :small_orange_diamond: OWASP-VWAD - comprehensive and well maintained registry of all known vulnerable web applications.
:small_orange_diamond: Metasploitable 2 - vulnerable web application amongst security researchers.
:small_orange_diamond: DVWA - PHP/MySQL web application that is damn vulnerable.
:small_orange_diamond: OWASP Mutillidae II - free, open source, deliberately vulnerable web-application.
:small_orange_diamond: OWASP Juice Shop Project - the most bug-free vulnerable application in existence.
:small_orange_diamond: OWASP WebGoat Project - insecure web application maintained by OWASP designed to teach web app security.
:small_orange_diamond: Security Ninjas - open source application security training program.
+ :small_orange_diamond: hackazon - a modern vulnerable web app.
+ :small_orange_diamond: dvna - damn vulnerable NodeJS application.
+ :small_orange_diamond: Google Gruyere - web application exploits and defenses.
+ :small_orange_diamond: Bodhi - is a playground focused on learning the exploitation of client-side web vulnerabilities.
:small_orange_diamond: Hack The Box - online platform allowing you to test your penetration testing skills.
@@ -495,6 +502,9 @@ Linux Security Expert - trainings, howtos, checklists, security tools an
:small_orange_diamond: Silesia Security Lab - high quality security testing services.
:small_orange_diamond: Practical Pentest Labs - pentest lab, take your Hacking skills to the next level.
:small_orange_diamond: Root Me - the fast, easy, and affordable way to train your hacking skills.
+ :small_orange_diamond: rozwal.to - a great platform to train your pentesting skills.
+ :small_orange_diamond: TryHackMe - learning Cyber Security made easy.
+ :small_orange_diamond: OverTheWire - can help you to learn and practice security concepts in the form of fun-filled games.
+ :small_orange_diamond: Unbound DNS Tutorial - a validating, recursive, and caching DNS server.
+ :small_orange_diamond: Knot Resolver on Fedora - how to get faster and more secure DNS resolution with Knot Resolver on Fedora.
+ :small_orange_diamond: DNS-over-HTTPS - tutorial to setup your own DNS-over-HTTPS (DoH) server.
+ :small_orange_diamond: DNS Servers - how (and why) i run my own DNS Servers.
+ :small_orange_diamond: DNS Privacy Server - running your own DoT or DoH server this page provides some ideas.
+