On the top you will see the current value of your funds in BTC and USD:
Please note that the value is for all your funds in your Wallet and Portfolio.
Under it is Wallet. Here you have a list of currencies in your wallet, BTC and USD value of your funds in it and options to deposit and withdraw each of these currencies:
To use funds from your wallet for trading you need to transfer them to your Portfolio. To do that you need to use Internal Transfer module:
Please note that you also can use it to transfer funds from portfolio to the wallet. You can learn how to do it in this article.
To see the list of your assets that can be transferred back to the Wallet please use Portfolio/Trading Account module:
Please note that the value of your assets in BTC and USD is available here as well.
Next module is Commissions Account. Here you will see funds that can be used to pay trading fees.
And, of course, there is a Transaction History module that will provide you information about both external and internal transactions: