counter circuits

1) Using Logisim design design a 4-bit counter IC-1 that counts 0,1,2,3,... 9. The control inputs (Set Enable Clear) are each single input pins. (Using D flip flop).
2) Using Logisim design design a 4-bit counter IC-1 that counts 0,1,2,3, ... F. The control inputs (Set Enable Clear) are each single input pins. (Using D Flip flop).
Parts required from the Logisim library:

A. Logic Gates
B. Input Pin
C. Output Pin
D. Clock
E. D Flip-Flop

I don't know where to start, need help!!!