Regardless of your IDE, creating module is not different from IDE to another and you should create your new module in the addons folder in Odoo 11 folder.

The below standard structure should be followed:

my_module
├── __init__.py
├── __manifest__.py
├── controllers
│   ├── __init__.py
│   └── controllers.py
├── demo
│   └── demo.xml
├── models
│   ├── __init__.py
│   └── models.py
├── security
│   └── ir.model.access.csv
└── views
    ├── templates.xml
    └── views.xml

You can use scaffold to create the above structure automatically:

Scaffold

Here you are the link for creating module:

​https://www.odoo.com/documentation/11.0/howtos/backend.html

The difference when you are using IDE like pycharm of eclips you can start/stop/restart the odoo service from the IDE.