First of all for solving circuit problems you need to have the knowledge of basic electrical components their formulaes and working .

Step 1:- first of all check for Series and parallel connection of resistors and capacitors and solve them.

Step 2:- Now in series connection current is same and in parallel voltage is same make an equivalent resistance  and capacitor circuit.

Step 3:- Distribute voltage and current in this equivalent circuit diagram and find the required values.

Google some formulas and concepts to solve problems easily:- 

1.ohms law 

2.Current division formula 

3.Voltage division formula

4.power and energy formula for resistance and capacitors.

5.Dielectric formulas for capacitors.