I read the preview to your book and it looks fantastic. Just what has been missing in school. I'm an engineering student and like many other will greatly benefit from this text. Have you considered writing more on math and physics? I would surely buy even more advanced topic like electricity, magnetism, and discrete math (Sets, proofs, induction etc.)
I actually have a draft on E&M which is 70% done, but I've now learned that it takes me about 1 year to get a book into good shape so I won't try to finish it just yet and instead spend the next six months working on the business side of things: scaling distribution and sales.
Two other topics which I feel competent enough to write about are probability and vector calculus so by 2015 I'll get to these topics too. I don't feel I have enough experience teaching more advanced topics to write about them---also there is less need for No Bullshit guides, because advanced math/phys books are quite good and bullshit free. It seems it's the freshman-year books that suck the most.
