Your GTD inbox: a single bucket to be emptied periodically

You can see your inbox in the Process section. Your inbox items are shown in the order they were collected with older items at top. The top item is not shown in the list, but in the Process form, as the current item you have to process next.

The contents of the inbox item can be seen on the right side of the process panel.

Notice that you can't select which item you want to process next. This is deliberate.