Thanks for the advice EyeCraft.
I did look at bones and skeletal structure before (few years ago(2002) at my first failed attempt at figure drawing (even started writing a book about how to construct the human body from scratch but somehow (as always) life and the need to make a living(or to quit slacking and do something serious (blah yadda noone wants to read me whining for thirtysomething pages ..) got in the way), tried to skip that this time around but I guess you're right, I should get back into that and while I was looking for references online, I found this hilarious (nonetheless highly educational) introduction to the skeleton system (a must see!)) and an online version of the 1918 edition (copyright ran out) of "Anatomy Of The Human Body" by Henry Gray.
Ok, no drawings in this post, but a couple of links to make it worthwhile:
that funny video mentioned aboveGrays Anatomy (1918 online edition)my unfinished old book from 2002 (sorry it's all in German but it has detailed pictures.. just looked at it again though and I must say my approach/thoughts back then was/were way too technical (especially obvious in the appendix))
Now, back to the drawing tablet..
appendI didn't want to go sleeping without having laid down a single line all day, so after skimming over my old writings, this ten minute scribbled abomination came into existence.

I hope to find more time tomorrow for some reading and better construction practice.
append, a day later..Well today, I collected some facts..

..broke them down to the bare necessities..

..and practiced that a bit.

I really feel that this bone approach is way too tedious for a full construction. I believe it would be more efficient to break down the whole body as seen from outside into simple volumes and then only use bones to determine where certain features show. I can't imagine getting a dynamic and interesting pose done by constructing everything from the bone level up. Ah well, still need to study the skeleton.