Depends on the type of cufflinks you have. It can be fixed type, swivel type, chain type or clip type.
For fixed barrel type, usually the face is bigger then then the base. Just go through all the button holes and its fasten. Its that simple. The face usually is in front so as to show the design.
For chain type, its the same way as above. Usually both sides are the same.
For clip type, just clip both the cuff together. Usually, the chain is outside the cuffs.
For swivel type, which is the most common type. Closed or align the swivel in a parallel position. Go through all the holes and opened back to lock it. It form a T shape.
Remember to fasten or you face losing it.
