There are a few things to take into consideration when arranging a long living room. First, you'll want to decide on a focal point and arrange your furniture around that. Secondly, you'll want to make sure that there is enough walking space and that all the furniture is accessible. Finally, you'll want to use different-sized furniture to create visual interest. A good way to set up a long living room is to use a large piece of furniture such as a sofa or sectional at one end and then place smaller pieces of furniture along the other. This will help to create a visual balance and make the room feel more spacious. You can also use different-sized furniture to create visual interest. For example, you might want to use a large coffee table at one end and a smaller side table at the other. If you have a lot of walking space, you can also experiment with different configurations. For example, you might want to place your sofa at an angle or use two smaller sofas instead of one large one. However, be careful not to overcrowd the space or it will feel cramped. Ultimately, the best way to set up a long living room is to experiment until you find a configuration that works best for you and your family.