You can apply motion blur by clicking on Cameras -> Render Camera and then changing the motion blur length.
Motion blur is applied by default on motion sequences.
As to your first question, I can't understand exactly what you're asking. To render a sequence, you click on Renders, and then towards the bottom there are some tabs, labeled "Quality", "Crop Region", etc. Click on the one labeled "Sequence/Output" and then click "Render Sequence".