I never had formal scale training when I was learning piano and this book has them all. There is a recommend specific progression and I have no reason to doubt its effectiveness. It will take me years to make it all the way through it - but I can see/feel improvements since I've been at it for the past 6 months or so. I doubt I will ever be as fleet of the finger as Daivd, but even at 50+, I'm seeing improvements!
The Ultimate Piano Workout
If you work these pages faithfully 10-15 minutes/day, your technique will spread across your keyboard.
I had piano lessons as a child (8 to 11) but quit in desperation as I was bad at it, and I mean it. Back in February (2022), after a 51 year gap I decided to go back to learning as my dream is to be able to play Isis from David’s album Goddess, and eventually his softer pieces. I just love doing my scales, which I find therapeutic, and if a day goes by and I do not practice it feels as if something is missing. I learnt more in these 3 months than I did as a child and though I know I still have a long, long , long way to go I can say that the Ultimate Piano Workout is an excellent manual even for a beginner like me!