Hi all, i'm new to trading and i made my first wallet of bitcoin in CoinBase...now i would like to buy some altcoin but if i would like to transfer bitcoin to exchange like bittrex or other they ask me an high fee for tranfer like 12$ for transfer 100$ of BTC....is it possible? How can you make good trading if everytime you have to transfer money from wallet you have to pay so high fee? I did mistake something? thanks
Coinbase have an exchange called GDAX.
whatever login details you have for coinbase also works for GDAX.
if you had just transfered your bitcoin to GDAX and you could have got zero fees for transferring to another address.