Hi,

how do I start to develop a plugin for Eclipse? I need a tool which isn't out there yet for my further development... so my main concerns are:

-How to add a perspective?
-How to add menu items?
-How to add a view into the "Show Views" menu?
-How to add to the preference pane? 
-How do I get information, like 
   * where is the workspace?
   * which files are open in the editor?
   * which projects are collapsed / expanded in the left projects view?
   * .....
-Which conventions (naming...) should I consider?
-How to set up update site/deployment?

Can you give me some hints, links, tutorials....

Dont get me wrong. I am using Eclipse RCP for developing stand alone apps for quite some time, so I am familiar with the techniques, but I never started to develop a plugin for Eclipse itself.

Thanks