Turning on a vacuum cleaner is a simple process that typically involves a few easy steps. First, make sure the vacuum cleaner is plugged into a power outlet. Next, locate the power button or switch on the vacuum cleaner, which is usually located on the handle or the body of the machine. Then, press or flip the power button or switch to turn on the vacuum cleaner. Some models may also require you to adjust the height of the brush roll or turn on any necessary attachments before use. With these steps completed, your vacuum cleaner should be ready to use, and you can begin cleaning your space.