Threading a sewing machine can seem like a complicated task, but once you get the hang of it, the process will become second nature to you. First, you’ll need to wind a bobbin—that small spool of thread that goes underneath the presser foot—and insert it into the compartment. There should be arrows showing you which direction the bobbin thread should go.  Next, place a spool of thread onto your machine’s thread pin and guide it through the thread guide on the left. From here, the thread typically needs to go around the U-shaped guide and then through the take-up lever. Once that’s done, you can pull the thread down to the needle, where it can be threaded through the eye. Finally, use the needle position knob or button to lower the needle all the way down and back up again to catch the bobbin thread. Check out the user manual for your specific machine if you're having trouble. Manuals often offer visual aids that can help you find where you need your thread to go.