Short grain rice, popular in Japan and Korea, is stickier and typically eaten with chopsticks by picking up clumps from the bowl and moving them to the mouth.
In contrast, long-grain rice, common in China, is less sticky. To eat it with chopsticks, move the rice toward your mouth and eat it in small clusters.
When rice is served on a plate, it's common practice to eat with spoons instead of chopsticks. Use the chopsticks to push the rice onto the spoon, and lift the spoon to your mouth.