Blender really isn't just a 3d modeling tool, it's a bit of a hodge podge. It does things well though. It gets the name "blender" for its video compositor features, comparable to AfterEffects.
For video editing, kdenlive is the state of the art on linux. Here's a guide written by a professional video editor who uses only free software http://slackermedia.info/
For video editing, kdenlive is the state of the art on linux. Here's a guide written by a professional video editor who uses only free software http://slackermedia.info/