As mentioned above,
1. Dont push the car when its not up to normal operating temperature. This is because the engine oil will not be at its most efficient. It will be slightly thicker while its cold so it takes more effort to pump it around the bearings, therefore bearings might not get full protection.
2. Don't turn the engine off straight after a work out, even if it was just one hard acceleration (up to 6000rpm say) from the end of the road and a quick stop at the side of the road. The turbo might not be glowing hot, but its internal spindle could be spinning at speeds close to 150,000rpm. Some modern turbo's can be spinning op to 220,000rpm. Stopping the engine instantly stops the oil pump and with your turbo still whizzing away will mean that its bearings may be starved of oil while it slows down.
Its always best to let your car idle for 30 seconds before switching it off.
3. Never blip the throttle before you turn off the engine for the same reason as 2.
4. As mentioned above, turbo's can get very hot too, up to 1000 degrees. If you have been on an enthusiastic run, give your car a little more time for the car to idle and cool before stopping the engine.
More useful turbo info can be found here:- Amazing facts about turbos
I hope this helps