Assuming you would like a step by step guide on how to use a joint roller:
Step One: Place your rolling paper on the joint roller. If you are using a pre-rolled cone, skip to Step Three.
Step Two: Add your ground cannabis to the center of the rolling paper. If using a pre-rolled cone, add your ground cannabis to the opening at the small end of the cone.
Step Three: Begin rolling the paper or cone back and forth between your thumbs and forefingers, being careful not to apply too much pressure and risk tearing the paper.
Step Four: Once you have reached your desired thickness/tightness, lick along the adhesive strip and finish rolling the joint until it is sealed.
Step Five: Twist off any excess paper from around the tip of the joint, and voila! You have now rolled yourself a perfect joint!