The first sets of keys a person usually learns in a keyboard. Home row is asdfghjkl; basically, it's the middle row of keys where your fingers should be set when they aren't being used. Your left hand: pinky on the a, index finger on the s, middle on the d, and pointer on the f. Right hand: Pointer on j, middle on k, index on l, and pinky on ;
"Hey man, I just learned home row!" "Holy crap! That is amazing!"