is there an official doc planning how to create a module

Question

I've spent several hours reading magento 2's official documentation, and I haven't found how to create a module :

• The documentation explain the structure of the filesystem, list the files that we can create in some directories (for example here),
• The exprected content of the composer.json module.xml and registration.php are well explained (several times),
• I've found some informations about the possibles entries in the configuration files (app/etc/*.xml),
• But I've didn't found a comprehensive explanation of all the content of the files (controller, view, layout, model, setup, ...). Did I missed something or all this area isn't covered by the doc?

the best ressource found untill now is this one : Creating a Magento admin page (but it do not cover all the need, for example, I want to learn how to add an "array" of custom data about the customer)

edit : I add what I try to do in order to show that it is not covered by the doc : add an "array" of custom data to the customer thoses data will permit to buy or not the products

• How to add thoses custom data : not covered (I think that I need to alter the data model to add new tables, in the setup file of the module)
• How to request thoses data in the frontend : not covered
• How to view/edit those data in the admin : not covered
• How to let the customer edit thoses data : not covered
• How to create REST API (wich will permit thoses data to be populated by a remote system) : not covered

Answer 1

"Create a module" is kind of broad as there is different types of modules. Fortunately, Magento 2 team provides a github repository with module samples: https://github.com/magento/magento2-samples

On top of that I suggest you check out the amazing Alan Storm article: http://alanstorm.com/magento_2_mvvm_mvc/