Blender is a commercial product which failed. It had enough users that the users bought the rights cheaply and open-sourced it. It's quite powerful,
and good work has been done with it, but has a poor user interface, which open-sourcing has not helped. Supposedly it's become better in recent years.
Here's an (out of date) overview of the hotkeys:[1] Some of the hotkeys change in each new release. In typical open source fashion, the "solution" to that mess was to make the several hundred hotkeys remappable: "Important note: the ever changing nature of Blender's development means features can be arbitrarily updated so shortcut keys may be mapped to different functions or be in different locations version to version - this is especially true of Blender 2.50 up to and included the latest versions."
If you like EMACS, you might like Blender.
From a developer perspective, the Blender game engine is interesting. An idea that keeps coming back is that programming should be done by wiring little boxes together in a GUI. The Blender game engine does that. This leads to giant, messy wiring diagrams.
Here's an (out of date) overview of the hotkeys:[1] Some of the hotkeys change in each new release. In typical open source fashion, the "solution" to that mess was to make the several hundred hotkeys remappable: "Important note: the ever changing nature of Blender's development means features can be arbitrarily updated so shortcut keys may be mapped to different functions or be in different locations version to version - this is especially true of Blender 2.50 up to and included the latest versions."
If you like EMACS, you might like Blender.
From a developer perspective, the Blender game engine is interesting. An idea that keeps coming back is that programming should be done by wiring little boxes together in a GUI. The Blender game engine does that. This leads to giant, messy wiring diagrams.
[1] http://www.katsbits.com/tutorials/blender/useful-keyboard-sh...