I read the first 10 pages of the pdf. I'm not sure who you think your target audience is, but this book doesn't seem to serve any of them.
You gloss over huge sections of algebra, and in doing so, ignore incredibly common mistakes that students make. Take a look at the top of page 9, 6 \sqrt{x} - 7 = [...]. You solve that out, but give no reason as to why you got rid of the 7 first, the 6 second, and the radical third. This is not an easy concept, nor is it an academic distinction.
Math might be easy for you, but it probably isn't for your target audience. You're assuming entirely too much about what your readers will know.
Beyond that, some of your math (and math history) has flaws.
"So this is what number meant during the whole middle ages. The notion of 2.5 goats didn’t make any sense to the people of those days. They would have been totally confused by the menu at Rotisserie Romados which offers 1/4 of a chicken."
This is entirely untrue. Even most illiterate peasants knew the basics of fractional parts in the middle ages. 2.5 goats didn't make sense, but 2.5 stone of barley did. The church prohibited usury, but lending still happened, so they had some knowledge of percentages as well. Despite the fall of Rome and the horrible loss of knowledge that followed, math wasn't completely lost. In 725, monks knew enough mathematics to predict the date of Easter (based on the lunar cycle, mind you) years in advance. And math flourished in medieval Islam.
Heck, if my memory serves, fractions were invented in Ancient Sumer, ~4000 years earlier.
"We can move a function f to the left by h units by subtracting h from x and using that as the input argument:
g(x) = f(x − h)."
This actually translates the function to the right. This is also where I stopped reading.
I really want this to be good. I love finding wonderful new resources for teaching mathematics. I'm sure you put a serious effort into the text. But I fear your no bullshit guide is just going to scare the shit out of its readers.