For the last versions the 'step by step' series was considered the official prep material for the exams for every app in Office. The step by step Access 2010 has been released in july of this year so that could be your starting point.
My advice however would be to use the 'Access 2010 inside out' as additional study material so you have a solid base when you take the exam. My personal opinion would be that the step by step alone isn't sufficient unless you have hands on experience.
So go for it ;-)
Maurice
Maurice