Merry Xmas to you too!
Shit... I can't point to any single place... just read as much as you can! If I had to say the best printed resource for cannabis genetics, it would be Greg Green's Cannabis Breeders Bible. I love that book. And for genetics in general... I took a Biology-heavy courseload in college. It was a good start to my 'other' career, lol!

Oh ps whorled phytolaxy is when you see those plants with 3 cotyledons and 3 petioles at every node instead of 2-lots of people call it polyploidy by mistake but that's a different condiotion.