In magento 1.9 I created a custom module with EAV models with the help of following tutorial. How to create an EAV entity?
Is there any equivalent in magento 2.
Eav attributes can be made for a lot of different things. Products is one of them. So when you search for that you want to include what you are making them for.
You also have custom attributes which is something else.
Best documentation here is from Magento self :