So i watched one of those videos on youtube where someone mentioned to not keep your coins on bittrex and keep it in your own wallet.  Do most bittrex users do it this way or not?  He says when you are ready to buy or sell a coin, then send the coin to bittrex.


However if thats the case, wouldnt you need to download 10s of wallets if you plan on trading at least 10+ coins?  The other thing is if you do this, wouldnt you need to pay those sending fees like bitcoin to do this?  So in other words, keeping a lot of btc or altcoins in your bittrex wallet is not secure?  I had thought with a bittrex account, you dont even need wallets anymore etc...