How to calculate current on different resistors
Simplifying then labelling this circuit will make everything easier:







simulate this circuit &ndash; Schematic created using CircuitLab

This is the beginning stage to simplifying it. From here you can turn this into 2 resistors by solving the top and bottom halves of the circuit. Once you have done this, you can find V2 and use that information to solve the currents through the different resistors.