I own a vehicle with a turbo charger, so I do have a bit of experience with them. And you might be able to find the owner's manual online in PDF format you can download and look at at your convenience.
As someone has pointed out in a different thread, a turbo charger can spin tens, even hundreds, of thousands RPMs while in boost, and it needs to keep cool. Full synthetic will help keep it lubed and cooled while this is happening.
Als I'm sure it'll point out in the owner's manual, if you've been on the highway, or running the engine pretty hard, it's best to let the car sit and idle for 30 seconds or more before you shut the engine off. This relates to the previous paragraph in that the oil(and probably the coolant as well) needs to cycle through the turbo. If you don't, you risk coking the turbo charger and this will land you with several thousand dollars worth of work to repair/replace the turbo. If they find out you haven't taken proper care of the engine, warranty or not, you'll be stuck footing the bill for it as they'll blame lack of maintenance or improper care on your part for the damage. So when you arrive at your destination, take a moment to gather your things or finish a song on the radio before you shut the car off. Get into that habit early on and it'll become second nature to you in no time.
As for premium fuel, the price difference in most places is 20 cents, and with a 15 gallon tank, you'd be hard pressed to spend $3 extra each fill up compared to regular fuel.
With AWD, be prepared to hear that you'll need 4 new tires if you get a sidewall puncture in 1 tire. They aren't trying to cheat you out of money, they are trying to keep themselves from having a possible future repair on their dime. Some/most AWD are picky about tire sizes and putting a new tire on with 3 that have 20k miles on them can damage the center differential. I've heard even different tread patterns can cause this to happen(i.e. 3 Goodyear tires and you put on a Michelin to replace the bad tire)
So, in summary, fuel, tires, and oil are cheap, new engines, differentials, and turbo chargers are expensive.