It's not so confusing..
When you breed Albino x Pied all of the babies will look normal but carry the gene for both albino and pied.
Then you raise those babies up and breed them to each other. On each egg you will have 6.25% (1/16) chance of getting a Albino Pied...
It takes about 6 years if you buy your albino and pied as hatchlings. But you can easy find dubble hets for sale also.