You know to connect ground and power.
Look at the table below. There is inputs and outputs. L=0, H=1, X= does not matter, up arrow means to go from (L to H)
To clear the part (all outputs = L) you need (three different ways)
1) CLR=L and S1,S0=HH G1,G2= don't care (X)
2) CLR=L and G1,G2=LL and S1=l, S0=X
3) CLR=L and G1,G2=LL and S1=X, S0=L
Shift the data right:
CLR=H, S1,S0=LH, G1,G2=LL, the CLK pin must go from L to H