Unlock the power of ordinary differential equations with Fast Track to Differential Equations, 2nd Edition. This applications-oriented and compact textbook from The Bookish Owl offers a clear, comprehensible introduction for students in physics, technology, biomathematics, cosmology, and economics. Dive into real-world applications, from climate change modeling with CO2 budgets to epidemiology with the SEIR model, including an analysis of COVID-19. This edition features a significantly expanded climate change chapter and a new epidemiology section. Abstract proofs are minimized, focusing instead on practical modeling, analytical, and numerical solution methods for first and second-order ODEs. With program codes for computer algebra systems and 103 motivating exercises with solutions, this book is an essential resource for mastering differential equations.