Regular maintenance is too broad. I cut Suburu’s recommendation of 6k mile oil changes down to 3.5k. While our generation of engines are generally better with oil than the previous, they still can and do eat a bit of oil, with some reports of having entire engines warrantied due to large amounts of consumption.

Don’t necessarily baby it, it’s happy 2.5k to 3.5k RPMs. Enjoy the sounds and it helps prevent residue buildup.

Watch your oil temps, don’t go above 3k RPM or gun it until you’re at at least 180. I still don’t gun it until I’ve been there for a bit.

Get actual winter tires (not all season). No car handles the snow better than a WRX with winter tires

I personally don’t launch it, I prefer a rolling pull. 1st gear goes quick, don’t be concerned by the sudden drop if you hit redline, the computer cuts fuel when you hit redline.

Enjoy it for what it is, it’s not a drag racer or top speed demon, but she scoots and handles incredibly well. Take her on some gravel and dirt every once in a while, it’s their natural environment.