Hi,

I am experienced customized PHP programmer.
What is the best way to start Module Based PHP programming (like monstercommece, X-Cart etc).
Simply I want to build an Ecommerce CMS which is based on modules and clients can choose their modules (e.g products, payment etc) so I do not have to customize CMS for each client.

But I don't know from where to start or how can it be implemented.

Thanks