With any tent, but especially with a single-wall tent, you will have to chose between draftiness and condensation. Ventilation is highly important. Don't close the vents or the beak unless it's raining sideways!
Also, silnylon stretches when damp, so you will need to tighten the guylines at bedtime. You can reach the adjustments for the front and front side guylines from inside the tent, so if there's no dew but it starts raining in the middle of the night, you don't have to get wet.
Try to camp well away from bodies of water, not down in a deep valley and under trees. All these help to reduce condensation. For those times you can't avoid such locations, have a packtowel or two to wipe down the moisture. If you have a Labrador Retriever in the tent, as soon as he wakes up and starts wagging his tail, you'll have a shower! However, a good DWR on your sleeping bag shell solves this problem; just shake the drops off the sleeping bag once you've put the dog outside. And you certainly won't have to wipe the tent down!
I like Franco's setup video:
His method of using the rear stake before inserting the rear pole. staking the front corners before doing the center and using two poles instead of one works a lot better for me than the method on the Tarptent site. Your Mileage May Vary.
However, you'll have quite a bit less condensation if you always sleep with your head at the door end. The lower the ceiling, the more apt the water vapor from your breath and body moisture is to condense before it can exit the tent.
If you're on uneven, sloping ground, it is harder to get a good setup. That's especially true with the beak if the tent door is facing uphill.