How do I determine the Voltages and Currents in this diagram

How do I solve these types of diagrams?
http://instagr.am/p/LHNG56SBDp/

When the switch is closed, a total of 30 amps of current flows the each set of resistors.
As the current flows through each set of resistors, the voltage decreases!
As 30 amps of current flows through the resistor to the right of the switch, 16 volts is used.
Remaining voltage = 50 – 16 = 34 volts

The voltage for each resistor in a parallel group is the same. The voltage for each of the 3 resistors is 12 volts. V1 = 12 volts
Remaining voltage = 34 – 12 = 22 volts
The total current in a parallel group is the sum of the currents through each resistor.
I1 = 30 – 17 = 13 amps

Whatever M stands for, uses 13 volts.
Remaining voltage = 22 – 13 = 9 volts

The voltage for each of the resistors in the parallel set of 2 resistors = 9 volts
V2 = V2 = 9 volts
I2 = 30 – 18 = 12 amp

16 volts + 13 volts + 12 volts + + 9 volts = 50 volts

Vs=50V, I=30A.
First bulb had 16V across it so, R=E/I to get the bulb resistance. Assuming all bulbs are the same, R=.53 Ohms.
Using Ohms laws, figure out the rest of the I's and E's in the circuit
Two parallel bulbs require different calculations to get the correct value.
Do some research online for Current in parallel DC circuits to obtain the values....Can't give you All the answers, can I?