Divide the problem up. Can you determine the position of each of the switches? Just print out the state of each switch, no need to try to do anything with LEDs at this point.
Get each LED to come on under your control. LEDs need to have a current limiting resister in series with them. Some LEDs have these built in and are advertised as suitable to run directly off 5V, 12V or whatever Voltage the resister is designed to suit. In my experience, most LEDs do not have this and need to be wired up with an external current limiting resister in series. If you try to run an LED without a current limiting resister directly off the Arduino, it'll draw as much current as the Arduino can supply and that is liable to overload the output circuit on the Arduino. So, read up on the circuit needed to power an LED and sort the hardware out for that, then write a sketch that does nothing but blink the LEDs under your control. You can use the Blink and Blink Without Delay example sketches as inspiration for that. (I recommend using the Blink Without Delay approach, but it would be possible to get something working using the cruder approach shown in the Blink sketch.)