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Don't forget to put it in the NEON wallet to start earning GAS! Most exchanges don't give it to you and keep it themselves!

if i keep NEO in the exchange THEY make GAS out of it?! never knew that!

Yes! Holders of NEO get GAS every day.. so when you keep your funds on Bittrex for example, they hold your NEO and they get GAS but they don't give you any (!).
Binance is one of the few (the only? dunno) exchanges that does pay the GAS to it's users, but I believe it is once per month instead of daily (administrative reasons).
Definitely start earning GAS though.. it's the best feature of holding NEO for investors