I am trying to have both stairs and steps and I will make them out of the reclaimed 6x6 redwood timbers. After I cut them to size and level the ground I wish to SECURE them to

them ground. So that they dont shift.

How is the best way to go about this?

In the front I will make stairs. So imagine a box then another box on that. Further up the path I will just run two redwood timbers horizontally to create a step.

Any help is appreciated.

thanks

jack