The e Language Perspective provides a workbench layout with many usefull views and shorcuts at hand for developing e code, for example the type browser, extensions browser etc.
From menu Window > Open Perspective > Other... chose e Language.
You can customize and save a perspective. In order to further speed-up the development, at any time you can switch between various perspectives with different tool (views) layouts. For example you can use one perspective for writting e code (the editor will take most of the real estate) and another perspective for code navigation (type browser will be a significant component).
The default e language perspective looks like this:
