Here are 2 Tips since the first one is so short.

Tip #1: Organize the user interface based on your current needs. At a minimum for those who only render, you can get away with just the Light Controls, Library, and Parameter windows being set up either all on the left or right side.  Having windows that you don't need will either just get in your way or if you are a beginner, confuse you.

Tip #2: Stop rendering with the main camera unless you influentially want your scenes to look flat.

Tips on using cameras inside of cars, building rooms, and other tight spaces.  Now you can turn your hallways into long and dark hallways.
Click Here:  How to use Poser cameras to render inside scenes