previous edition of this book is actually more better than this one. i can point out some mistakes, such as an nfa given in pno 53,66,67 and dfa in 59. but these mistakes are not in the previous edition and it is weird why this new mistakes had been introduced in this edition. i think
EITHER
1.The author may changed the examples and forgot to change the explanation
OR
2. In the book's acknowledgement they told that the publishers gave this book to a local author to adapt this book to In...

I have read the topic from several other resources and can now say that this is probably the best book on automata and formal languages with decent introduction to turing machines.This is not a verbose book and if read with slides available on author's website gives very good understanding of the topic if you are getting into the subject for the first time.I will highly recommend this book for any novice as well as experienced reader.

I highly recommend this book for a beginner and this is a perfect choice for someone who's looking for lots of examples. The proofs are formal and explicit and the definitions are very clear & easy to understand and also the notation and formatting are too good. Most importantly, the exercises are excellent, so depending on the level of your exams it will be good study material.

If you are preparing for GATE or college exam, this book is one of the first few recommendations you will receive from people, and rightly so. Flipkart delivery and packaging was excellent as usual.

Best

It's definitely not for the beginners who want to learn Theory of Computation from scratch. From my experience I can say that for the introductory ideas follow books by either Mishra or Peter Linz. Then go through this book. Only that way you'd be able to have the flavor of this book properly. The derivations, definitions and everything are written in a very easy and perceivable way. But again the same warning.. don't buy if you are a beginner. You won't understand one word of it and get frus...

The Bible for automata theory!

I would recommend this books for beginners. It has concepts explained in detail. Concepts are explained in the best possible way.

Good one with understandable language

best book for theory of computation