Completely new to this. Bought some Bitcoins from Bitcoin.de and received confirmation that the trade has been completed and they show me my balance.
Downloaded a wallet from Bitcoin-QT. That's fine. Now, how do I get the Bitcoins I've bought into the wallet I've downloaded? And how do I then use them to buy something online?
First thing, encrypt the wallet with a good passphrase.
You will want to go to the receive tab in Bitcoin-QT, and create a new receiving address for yourself. You may want to create a new address for every transaction for anonymity purposes. Copy the address to your clipboard and then go to bitcoin.de, and send the coins from your account to that address. It may take an hour or so for the transaction to complete so just leave the client running and be patient.
HINT: Be sure that bitcoin-qt is finished syncing with the blockchain before you send yourself the coins or you may not be able to accesss your coins for the 24-48+ hours this process can initially take! If you need it faster, might want to temporarily use either electrum or blockchain.info wallet until the client is completely synced.
I guess, you have a so called browser-based wallet at bitcoin.de. You should be able to send bitcoins from this wallet to your Bitcoin-QT wallet. To do this, copy-paste one of your bitcoin-addresses from Bitcoin-QT (you can generate as many as you want) to the transaction form on bitcoin.de Then, if Bitcoin-QT is fully synced with the network, you should see your Bitcoins there after a while.
Buy something online is similar: The shop/site/whatever gives you a Bitcoin address. Copy-paste it to Bitcoin-QT (or to any other wallet) and send the appropriate amount.
