For most situations you are best not closing the wound and just stopping the bleeding, cleaning the wound and then dressing it with sterile bandages. Closing wound in the wilderness and other non sterile environments will increase the risk of getting a foreign object in the wound.
If you must close a wound most untrained folks are best using wound closure strips; you can improvise this with duct tape.
There is actually no need to suture; most wounds will heal on their own. Stiches are mostly used to prevent excessive scaring and are best left to professionals.
Unless you are an RN, medic or MD you don't need sutures.