One of the joys of owing and maintaining Chase my Giant CRX 1 (or was as they front brakes have been changed now to Deore V-Brakes), is its Tektro RX-5 85mm mini v-brakes, not. V-brakes are not the greatest brake system in my view, particular trying to keep them adjusted. To help get a handled on the process, I have found this video from the BicycleTutor helpful.
If you have further advice on adjusting v-brakes or other good videos, please post the details as a comment. Your contributions will be appreciated I am sure.