Select the Render tab, and then select Render in the toolbar

In the window that opens, select the Render Preview (10-20 sec) tab to open the preview. The view will take around 10to 20 seconds to load.

On the right are the Environment and Sunlight settings, which you can readjust alongside the preview. To view changes to the preview after adjusting these settings, select Refresh Preview at the bottom right of the preview thumbnail.