You should follow the above 4 steps so carefully to configure your new MikroTik Router successfully. If you miss any step, your configuration will be wrong and your LAN users will not be able to access internet through MikroTik Router. If you face any confusion to do the above 4 steps, watch the following video tutorial on MikroTik Router Basic Configuration using Winbox. I hope, it will help you enough to configure new MikroTik Router.