In the Yau method, you solve two opposite centers and then solve three edges to make an almost full cross. You then, use the last edge slot to finish the rest of your centers, pair the last edge and place it. Once your centers are made you would go on to fix the rest of the edges solving 2 edges, then 2, then 2.. then the last 3 - or solving 3 edges, then 3 edges, and then the last 3 edges, labelled as 2-2-2-3 and 3-2-3 pairing. You would then solve the cube as a 3x3, along with the parity errors, if you get one. Yau can easily get you sub-1:30.