- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    CookLesson *lesson = [lessons objectAtIndex:indexPath.row];
    DetailController *detailController = [[DetailController alloc] initWithNibName:"your-nib-name" bundle:nil];
    detailController.lesson = lesson;
    // push the controller on the nav stack, etc.
}