Concepts 
This section describes the concepts of the SAP NetWeaver Development Infrastructure (NWDI) technology. More information:
Detailed description of SAP's component model. This is a must read for everybody who works with the development components (DCs) and software components (SCs) in NWDI.
Details about what the development configuration is and what you should use it for
Local Development as a Start to Component Based Development
How to perform local development based on the component model.
Development Using Optional Development Infrastructure
How to perform development using third party development infrastructure.
Components Development with the NWDI
Details about the development you can perform using the NWDI. This documentation lays the basic groundwork for using the NWDI. Everything you do from now on should correspond with a scenario that is described here. See also Scenarios and Recommendations on Using CTS and NWDI.