Links – start hacking

XSS
https://zseano.com/tutorials/4.html
https://brutelogic.com.br/blog/xss-cheat-sheet/

EXPLOITS
https://www.exploit-db.com
http://0day.today
https://packetstormsecurity.com

TUTORIALS
http://www.hackingtutorials.org
https://www.hacker101.com/

OTHERS
pentestmonkey.net
https://www.corelan.be
http://fuzzysecurity.com
http://www.darknet.org.uk
https://highon.coffee/blog
http://www.opensecuritytraining.info/Training.html
http://www.it-docs.net/categories
https://blog.g0tmi1k.com

Boost your skills
www.hackthebox.eu
www.hackthissite.org
www.ctf365.com
www.lab.pentestit.ru
chall.stypr.com