It varies from person to person.

I can build a house from start to finish and figure it all out easily. I can rebuild a car pretty easy too. Computer hardware and networking stuff is no problem. I started navigating the us with nothing but maps (pre internet access availability for me) at 16 and have driven all over since. I excel in spatial relations from what I'm told.

I don't understand nouns, verbs, adverbs, or anything that goes along with it but can speak and write clearly. Learning languages is a pita. Same goes for programming. Interacting with people outside of certain things in person makes me cringe. Interacting on the phone is worse unless I know someone, I'm currently still using my wife's debit card to access my bank account 7 years after she passed because I have to call the bank to fix mine and I can't stand the thought.