Every man his own currency you may think in these modern times...and even more confused when sites like XAPO offers collective Wallets and sites like BitMixer offers a Wallet of mixed currencys.
Can someone please explain how to act with theese to be on the safe side?
But what are you trying to do with your coins? Do you seek online wallet or do you need bitcoin mixer? If you are a newbie then I doubt that you need online wallet with the ability to store various coins.
It is only needed when you are trading them and you need your coins stored in one place. If I were you I would download standard software bitcoin wallet and store my coins there. It's the safest way.