PMO Establishment / Training

I am looking to establish a formal PMO organisation and governance structure, initially internally faced for the organisation and then latterly able to support change with external clients. 

There is a lot of material and training available, although I wondered if the community had any advice in terms of formal training and certification. 
I am looking for training to cover structure, governance, roles, competencies and activities  

I cannot find anything specific in PMI for this and wondered if anyone could point me in the right direction if I am missing it?
As an alternative I have seen the House of PMO offer training that looks applicable, and to see if anyone has experience of these offerings? Thanks