My 2 favorite shortcuts of the day.

Number 2 Control-Shift and the right or left arrow. Highlights a word at a time to be replced/deleted/copied etc.

Number 1, my all time favorite, in the IDE if you get the little red underline that says you are missing an include, hit Control and . (period) and you will get the drop down. The only odd thing is you hit Enter to select it, where most times in intellisense you hit Tab. But maybe that is just me.