Once these two (mainly psychological) obstacles are overcome, beginner snowboarders should be able to progress relatively quickly in the sport. The attachment of the feet to the snowboard, awkward at first, becomes an advantage - as skiers find that crossing their skis can become an issue; keeping the skis apart is a skill in itself.
Beginner snowboarders, blessed with a monoski, don’t have to worry about this. So once they’ve grasped the basics of making a turn – turn shoulders, which turns hips, which turns ankles and feet, which turns snowboard - then they can start to hit the proper slopes. The next step is to work on improved balance and increased speed. And increasing speed actually makes turning even easier due to there being less contact between the base of the board and the snow, which decreases resistance when turning.
For most beginner snowboarders, the basics of riding down and making simple turns should be achievable within a week or two. So Increasing speed, finessing turns and taking your riding to the next level on the slopes, in the park (and in the backcountry), is what you will spend the rest of your time doing!