‘Basic Particles to fluids’ is a book based on a number of chapters of a bigger book ‘Basic Principles and Concepts’ by Avijit Lahiri, a renowned researcher, teacher, and author. Like the bigger book, ‘Basic Particles to Fluids’ is meant for students of physics from the late school to college levels, covering both general and advanced course materials. It is a great text on basic concepts in mechanics over a wide range of topics with a truly broad coverage, which makes it a source-book of unique value to students of physics – one that will be of use for teachers of the subject too. Students and teachers in related subjects like chemistry, biology, and the various engineering disciplines will also benefit greatly from it. The book is completely modern in approach, and is exhaustive and authentic. The presentation is exceptionally lucid, and captures the essential charm of physics. All the concepts are developed from elementary considerations, and are built up to quite advanced levels without loss of coherence, simplicity, or elegance. The mathematics is essentially at the high school level, and relatively advanced mathematical ideas have all been built up in a self-contained manner. It has six meticulously written chapters, systematically divided into sections and subsections, and a moderate number of well chosen problems with hints for their solution. And, it makes for enjoyable reading!