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
Do not use coinbase. Coinbase is an antibitcoin company. They refuse to implement the upgrades which solves the fee problems.
Use only segwit ready exchanges and you also should be using a segwit address.
https://bitcointalk.org/index.php?topic=2164068.msg26249608#msg26249608The message above explains how to create a segwit address which starts with 3....
Electrum can create segwit addresses by default but they start with bc1 and they are not compatible with many things yet. Skip that one for now, just use the one which starts with 3 and you'll be able to receive coins from anywhere.
Keep in mind segwit tx's cost only $1-2 as the legacy tx's cost $15-20. Don't get ripped off by the nay sayers.