I suggest keeping a few paper wallets (cold storage) in a few different places. 0.01 to 0.1 Bitcoin in a variety of paper wallets, small amount on a
TorWallet.com, hardware device like
KeepKey.com, also
blockchain.info for your virtual wallet when you pick up from
LocalBitcoins.com. Keep them out of exchanges, just use them to purchase then move Bitcoin and other crypto as quick as you can to an environment where you keep control. Remember if you don't hold it, you don't own it.
This is all true (nearly), but you shouldn't forget that if you don't put any coins on exchanges, you can't trade, if you don't put it on gambling sites, you can't gamble, if you don't put a bit into web wallets, you can't spend them in a comfortable way (bitcoin debit card, etc)... So if you want to use your coins, it's impossible to avoid risking them. And it's not only the risk of the trading or gambling (not sure which has bigger risk
) but every possible sotrage has it's risk. Even if you use paper wallets, seeds engraved in metal bar, laminated QR codes, etc... so you can't fully avoid risk. You should find the balance.