Sorry, but I didn't know where to post this. So if this is the wrong place, please excuse me.
I'm searching for an extensive book that's showing some sketching techniques (pencil only, not painting). I've been drawing for years, but I've always lagged a lax and loose linework when sketching my ideas. What I need is something that rarely focuses on the detailling steps of the work but rather explains how to get an idea down, quick and straight. Not even the techniques about how to draw a head, or a hand, with anatomically correctness... Basically, a book full of unsorted lines that form a body, a vehicle or something else... (and the proper descriptions)... Also, I'm looking for something fresh and new. Of course, I know the old masters know best, but... you know.