https://cybergames.circadence.com/
https://www.codecademy.com/
https://linuxjourney.com/
https://mitrecyberacademy.org/learn/ - *行业工具
http://overthewire.org/wargames/ - *Linux
http://www.underthewire.tech/wargames.htm - *Powershell
https://www.hacksplaining.com/lessons
https://codepen.io/
https://learnpythonthehardway.org/
https://www.w3schools.com/
https://www.hackingarticles.in/web-penetration-testing/
https://cybergames.circadence.com/
http://lvissa.org/student-resources/
http://mlhlocal.host/apply - *大联盟黑客免费设置
