added 'Secret Knowledge' chapter

- signed-off-by: trimstray <trimstray@gmail.com>

README.md

@@ -241,6 +241,13 @@ performance of any of your sites from across the globe.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/toniblyx/my-arsenal-of-aws-security-tools"><b>AWS security tools</b></a> - make your AWS cloud environment more secure.<br>
 </p>
 
+##### :black_small_square: Secret Knowledge
+
+<p>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://bitvijays.github.io/LFC-VulnerableMachines.html"><b>CTF Series : Vulnerable Machines</b></a> - the steps below could be followed to find vulnerabilities and exploits.<br>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://hshrzd.wordpress.com/how-to-start/"><b>How to start RE/malware analysis?</b></a> - collection of some hints and useful links for the beginners.<br>
+</p>
+
 #### Blogs
 
 <p>