Breakpoints:
1) Configure a dbugger in debugger options
2) goto the line you want a breakpoint on, press F5 or klick the left margin of the editor.
There is no console output window yet (it isn't fully implemented in the gdb-MI interface yet)
Getting passing imput is not possible. Before this will happen, the debugger interface has to become more stable. The reason for this is that there is no separate stream to pass usr input to. Both your app as gdb receive the chars you type. So it might be a gdb command, or just user input.