Ok your question is a little confusing? I will try to help.
In layout you need to load your object, and setup some lights so you can see it when rendering(mabye a ground plane to). You also need to adjust the camera properties to render at the resolution you want. And you also need to adjust the rendering properties, and place the camera in the scene where you want it. When your scene is all setup you hit F9 to render an image then you hit the "file" dropdown list on the top left and save the image to your HD in a format that suits you like Jpeg or Bmp. I would save it as a LW_jpeg if you want to show it on the web or send it to friends.
I suggest going through a couple of the free tutorials here like the "Sunset or the "Red Peppers". They will take you through some scene setup in layout and get you rolling. If you have any further questions feel free to fire away. I might suggest asking more specific questions because general questions can cover such a broad area. Its better to ask many specific questions than one broad one.
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