Haiii Help pls(ipv6)

May i know when do we use ipv6?
Need help with this :D

You don't... not for a while anyway.

IPv6 has been introduced (a while ago) because of the suspected IPv4 shortage.
Currently there are no IPv4 blocks to be given out anymore to hosts and businesses because there are simply no more left.

Editing!

Thanks dave and fourrth!