32 Bit Increment Circuit and Verilog Program
Do you know how a d-flip flop works? 
1) Go do a study on d-flip flops, make sure you know how to write code for a d-flip flop in verilog. Do a comparison for a d-flip flop and code here
2) now that you know how a flip flop works, what if you expand it to 32 bits?
3) ask yourself, what happens if I want it to store my input signal on the rising edge? on the falling edge? How do I code this up?