Set storyboard id of view controller in story board in identity inspector
Make a reference to your storyboard like
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
then to your controller
YourController *vc = [storyboard instantiateViewControllerWithIdentifier:@"YourController"];// storyboardId
[self.navigationController pushViewController:vc animated:YES];
and you can also make segue and do
[self performSegueWithIdentifier:@"YourSegueIdentifier" sender:sender/nil];