I have been trying to understand the concept of paper wallets. They seem to be secure in the sense of holding our bitcoins but no so much when we try to spend the bitcoins from the paper wallets. Now, I am supposed to transfer all the bitcoins from my paper wallet at once while importing the private key in blockchain.info. But what will happen if I spend a little bit from it?
From what I understand at this point, the rest of the amount won't be present in the paper wallet address. It will go to a "change" address. This is where it gets all confusing. How will I get access to the rest of the bitcoin amount then?