LTCD ist the first coin i invested in (200k Coins) and before i only used Bitcoin on Blockchain Online Wallet
Maybe a stupid question but if i Transfer my 200k LTCD from Bittrex to the Windows Wallet.. what happens if my PC crashes or something? Are the coins lost then?
Tank u if somebody could answer this newbie question

You can transfer them to your pc wallet and then backup the wallet.dat file on a flashdrive or some other removable media if you like. When the coins are in the wallet, just go to File > Backup Wallet and then pick the location to backup the file.