If you're a complete beginner in writing games, start writing little OpenGL-demos.
Tutorials can be found [url=nehe.gamedev.net]here (in englisch)[/url] or here (in german).
After you know the basic of OpenGL start making a little game. For example Tetris.
This will show you how you have to solve the problems you found in games (feel free to present your game in our Projekte-section).
If you have done this, you may start to add newton (or any other physicengine) to your game.
You'll lose the gameplay, but you gain knowledge about the engine itself.
Finally you can start programming your favorite game including physics and spectacular graphic
So, back to your question...
DGL has an OpenGL-SDK, which should include everything you need to start programming.
If you're missing something, use boardsearch and reask again.
)