Maths, physics, biology, chemistry, engineering, money and health — each subject rebuilt from scratch, in English and Spanish. Every book starts with the idea, not the formula, uses real examples rather than abstract ones, and respects your intelligence without assuming your background.
These are ebooks. PDF files you download the moment you pay and read on a phone, tablet, laptop or printed out. Nothing is posted to you.
Every bundle works out at $9.40 a book instead of $19.99 — and you can still buy any single title on its own further down.
Five subjects, rebuilt from scratch. Every one starts with the idea, not the formula.
From why your coffee goes cold to why extra dimensions are mathematically required.
From the structure of your body to the DNA that builds it — one connected system, not five disconnected subjects.
Why water puts out fires, why gold never corrodes, and why two identical reactions can take three seconds or three hours.
How machines, structures, circuits, reactions and flight actually work — five books, one connected discipline.
Nobody taught you money. These five books do, from scratch.
Investing, explained like you're allowed in the club.
The grown-up money stuff nobody explained. Explained.
Your test results came with numbers. These books come with the explanation.
The everyday body stuff nobody ever explained, explained.
The five subjects every nursing program starts with, explained from zero.
The five units that sink nursing students, explained from zero.
The Math Bundle in Spanish — las cinco materias, traducidas por completo: explicaciones, ejemplos y problemas de práctica.
Every book is $19.99 on its own. The bundles above bring that down to $9.40 a book.
PDFDerivatives, integrals and limits from scratch. Why your speedometer is a derivative calculator, and why an MRI machine is calculus made visible.
PDFYou stared at 2x + 5 = 11 and wondered why there was a letter in your math. A variable is a placeholder for a number you haven't found yet — once that lands, the subject changes.
PDFShapes, measurement and the Pythagorean theorem — why it works, not just the formula. Built for anyone who has ordered the wrong amount of flooring.
PDFYou were handed SOH-CAH-TOA, told to memorise it, and never told why. Trig is the mathematics of angles — and angles are in every GPS signal and audio waveform.
PDFStatistics can be used to prove anything. That's not a flaw in the subject, it's a flaw in how it gets used — this gives you enough of the real thing to tell the difference.
PDFEnergy, entropy and heat — from your coffee cooling down to the four laws that make every engine possible. Why nothing is ever truly 100% efficient.
PDFFields, flux, and the correction that let Maxwell predict light itself. Why electricity and magnetism turned out to be the same force.
PDFSuperposition, entanglement and tunnelling — the rules that take over once you're small enough. Why your SSD depends on physics that shouldn't be possible.
PDFHow astronomers measure a 93-billion-light-year universe without leaving Earth. Why looking into space means looking back in time.
PDFThe actual problem string theory was built to solve. Why extra dimensions are mathematically required, not just a fun idea.
PDFThe 5 levels your body is organised around — cell, tissue, organ, system, organism. Come out able to read a medical report instead of nodding along to it.
PDFA doctor handed you a number — blood pressure, cholesterol, a kidney marker — and you nodded. This is the mechanism behind the result.
PDFWhy your brain keeps working against you. Neurons, the prefrontal cortex, dopamine, the hippocampus — and why decision fatigue is real biology.
PDFNearly 3 bacterial cells for every human cell in you. The gut–brain axis, the hygiene hypothesis, and why constant hand sanitiser can make you sicker.
PDFThe one core problem every living thing solves — and how DNA, proteins, mutation and evolution are a single connected story rather than five separate topics.
PDFEvery reaction in the universe is atoms trying to settle their outer electrons. Bonds, moles, acids and equilibrium once that one idea is in place.
PDFThe chemistry your body runs on — why enzymes make a reaction a million times faster, and what actually happens to a meal after you swallow it.
PDFNot memorising 200 reactions. Carbon has four bonds and electrons move from rich to poor — every mechanism in the course follows from that.
PDFWhy some reactions release heat and some need it, why a reaction can be inevitable and still take a thousand years, and what entropy actually measures.
PDFThe periodic table read as a map instead of a wall chart. Why gold never corrodes, why sodium explodes in water, and what a catalyst really does.
PDFForce, load, stress, torque, friction and mechanisms — then one real timing-belt replacement that uses every idea in the book at once.
PDFA breaker kills the power to one room and nothing else in the house flickers. One dead bulb takes out a whole string of lights. Same electricity, opposite behaviour.
PDFA bridge holds for eighty years and nobody thinks about it until the day it does not. What keeps it standing is a small set of ideas, not luck.
PDFSomeone drew a box, then another box, then an arrow between them, and called it a process flow diagram. You copied it down and never found out what it meant.
PDFA plane weighing hundreds of thousands of pounds stays up for hours; a rocket weighing millions leaves the atmosphere entirely. Both beat gravity, using almost none of the same physics.
PDFA budget isn't a punishment. It's a plan for money you haven't spent yet.
PDFThe rate stays the same. The base keeps growing. That's the whole secret.
PDFA credit card is a short-term loan with a clock on it.
PDFYour receipt isn't lying. Here's what's actually happening to your money.
PDFOne number tells you where you really stand. Here's how to find it.
PDFSaving keeps money safe. Investing puts it to work. Here's the difference.
PDFA share is a slice of a real business. Everything else follows from that.
PDFReturns are uncertain. Costs are certain.
PDFAn account is a container, not an investment. That one idea fixes the alphabet soup.
PDFRisk is the range of outcomes. Here's how to see it, and live with it.
PDFEach rate only touches its own slice. That one rule changes everything.
PDFInsure what you couldn't absorb. Absorb what you can.
PDFIn the early years, most of your payment goes to interest. Here's why, and what you can do about it.
PDFA student loan is a normal loan with unusual rules. Here are the rules.
PDFYour spending is someone else's income. That loop explains recessions.
PDFYour results weren't the problem. The explanation was.
PDFYou've heard these three numbers all your life. Here's what they mean.
PDFOne split explains almost every vitamin fact: stored or flushed.
PDFThe bottles weren't the problem. The explanation was.
PDFYour gut wasn't the problem. The explanation was.
PDFDerivadas, integrales y límites desde cero. Por qué tu velocímetro es una calculadora de derivadas.
PDFTe quedaste mirando 2x + 5 = 11 y pensaste: ¿por qué hay una letra en mis matemáticas?
PDFMemorizaste las fórmulas y aprobaste el examen — sin entender nunca para qué servían.
PDFTe dieron SOH-CAH-TOA, te dijeron que lo memorizaras, y nunca te explicaron por qué.
PDFLa estadística se puede usar para probar cualquier cosa. Eso no es un defecto de la materia.
You don't have a memory problem, you have a which-rule-do-I-even-use problem. Every derivative rule in one decision tree, with worked examples and full answers.
You get the intuition first — what's actually happening — and the formula shows up afterward, as the natural way to write it down.
Speedometers, MRI machines, GPS signals, blood pressure readings. If an example couldn't exist outside a textbook, it doesn't make the cut.
Written for someone smart who was taught badly — not someone who needs to be talked down to. No gatekeeping, no condescension.
Most people don't buy a book. They buy hours of someone else's time, one confused session at a time.
Based on 2026 average private tutoring rates of $40–$120/hr and roughly 30–40 total hours to work through five subjects from scratch.
30 ebooks across maths, physics, biology, chemistry and Spanish. Bundles at $47, singles at $19.99 — instant PDF download, nothing physical is shipped.
See the bundlesThe Biology Bundle, the Chemistry Bundle and several new ebooks just went live. Get an email when new ebooks launch — at the launch price, before it goes up — and tell me which subject should come next.
There’s a confirmation email on its way — click the link in it and you’re on the list. I read every suggestion, and if enough people ask for the same subject, it gets built next.
No Fluff Academy