For English Speakers, basically what he talks about is there are 3 types of groove (or kinda swing ). 1. play kick ahead of hat and snare(hat and snare is play just on beat). 2. play triplets. But actually it's between triplets and normal beat otherwise it's gonna be shffle beat. 3. Questlove, J Dilla ish groove. Especially Questlove is random. He adjusts the groove by using ghost notes. He plays ghost notes on and off beats randomly which makes his unique groove. And then he has some additional technique to add his own color. 1. Play Quarter note open hi hat instead of 8th or 16th notes which is normal. 2. when he play snare and hat on 2nd and 4th beat, he sometimes switch hands. And also he makes it like flam and play snare earlier than hi hat. 3. Split the groove of snare and kick. I'm not a drummer but my understanding is like this.