Can anyone help me teach how to deface websites?

[vnf0und]

I want to deface this website but it's hosted by like a big company.

How would I even go to hack it?
I tried some basic info checking like server version, etc. And some SQL injections but it seems to stop those.

 

[shrekushka]

damagelab.org

 

[parag0n]

winux.net.ru

 

[money-]

damagelab.org

Interesting.. , free public lab like DVWA?

winux.net.ru

is this working? what's this?

 

[shrekushka]

Interesting.. , free public lab like DVWA?