Congratulations on finally getting your first standing desk! Finding a ergonomic and comfortable setup often starts with setting the desk height such that your hands are resting 90 degrees on the table. This not only helps to keep a good posture and relieving back pain, it often helps keep you comfortable as well! Usually a comfortable desk height allows your hands to be rested at a 90-degree angle on your desk.
To make the most out of your new desk, here is a guide on how you can dial in your new desk settings!
Remember, this is just a guide. Use what makes you most comfortable!