how does it work for non dev, for example as newbie like me I have read some advise that i can join airdrops but i dont know how it works
You definitely don't need to be any sort of dev. Get an ERC20 wallet like My Ether Wallet for free. The vast majority of airdrops are built on Ethereum and use its token system. Write down the private key (do NOT lose it or give it to anyone). Then, using your public Ethereum address, start signing up for airdrops.
Now you can start looking for...
AIRDROPS THAT MAYBE DON'T SUCKhttps://docs.google.com/spreadsheets/d/1OoNKjUxXkp-g0Etn5XZdD8lD3FiUngY8GfDNNoAWGPcNo, really. Like this one.
https://gonetwork.co/airdropWinners of ETHWaterloo - the world's largest Ethereum hackathon. I bet you didn't know about that. And you can sign up right now to get their tokens.
Check out the Google spreadsheet for an active, ongoing list of other airdrops that maybe don't suck. I update it daily.
May i know if Gonetwork airdrop is legit?