Get a Ethereum wallt (Metamask, etc..)
Open Ethereum --> Go Recieve and copy the Address.
Go to https://nftsea.net/8FESRQG
Click on Airdrop and Paste the Ethereum address on the Box shown there and you will Get 10 NS worth where 1NS = $100 according to them!!
Refer your friends(max 50 only) to...