It's not just a case of showing your CEO how to Tweet (her teenage daughter has probably already shown her how to do that) . It's a case of making sure the board and other executives have the capabilities & understanding to be able to seize the power that digital change can deliver.
In my experience & opinion there are four different approaches to providing these skills and experience directly into your C-Suite (A Chief Digital Officer, A Digital Non-Exec, A Change Director or External Consultancy). However each situation is different and in reality your solution to this may be a combination of two or all of them.
Whatever route is chosen, this injection of senior level capability typically has to help the company leaders through a fast-paced delivery of new products, services, processes and technologies.