This book is an expansion of the previous one to all public. The book is aimed at those in all levels, interested in perfecting their practices of applied mathematics in their daily life. The book gives a gradual way of becoming an expert in applied mathematics. It teaches basic steps to solve simple to complex problems with practical real life examples such as personal finance, estimating materials, reading meters, optimizing costs, solving probabilities, step by step design of automatic system and complex simulations. The first two chapters are within reach of anyone who wants to improve in applied mathematics. The following chapters are more advanced and the last chapters treat of issues at engineering, graduate and research levels.