If you look in the menu of the ITAM Store, you will be able to see the various tabs and options supported on the Store. Amongst these, you'll find the blockchain wallet, which also serves as your personal wallet. Below is a diagram explaining the different tabs and displays.
ITAM Store Menu Overview
The wallet has two different modes, depending on which type of account you are using (ITAM, Facebook, Google account users vs. EOS account users). We'll look at the wallet for ITAM, Facebook, and Google users first.
This is to deposit EOS.
This is to withdraw EOS.
Next, we'll take a look at the wallet for EOS account users.
This is to transfer EOS.
You simply fill in the necessary fields and press 'Transfer'
This is to check your CPU and NET usage, as well as to Stake and Unstake EOS.
Fill in the necessary fields, and press Stake.
This is to check your status of RAM usage.
Proceed by filling in how much RAM you would like to purchase/sell.