One last thing, for bittrex and bitfinex, we gotta wait for the signups to reopen, but kraken is still a fast solution, I already have managed to create one account there. Always have multiple solutions, and store your coins on blockchain.info (they have safe wallets that are created fast), and also if possible on a hardware, I'm thinking about building a coin bank on an USB key, here is the tutorial https://news.bitcoin.com/bitcoin-bank-less-thirty-minutes-usb-drive/