I'm new to dota but have played quite a bit of league of legends and I'm very much used to using ctrl-qwer to level up my abilities. Is there a way to do this in dota 2?
I'm not a very experienced player but I just opened up Dota 2 and tried mapping 'Ability Learn' to control and it didn't work.
However, upon a little bit of research and testing to verify if what this site says is true, it seems that what you're asking is hard-coded into the game, and that's why you can't change the key binding for control through the options menu.
So basically: ctrl+(ability key) DOES level up your ability, without needing any changes in your settings.