Many students find that combining YouTube tutorials with free online solved problems is just as effective as owning a PDF of Puntambekar.

Formal Languages and Automata Theory by is widely regarded as a foundational textbook for undergraduate computer science students, particularly those under the JNTU curriculum. The book serves as a bridge between abstract mathematical logic and the practical engineering required to build compilers, parsers, and efficient algorithms. Core Topics Covered in Puntambekar's Book

While the full copyrighted PDF is generally not available for legal "free" download from official sources, you can find previews, digital notes, and purchase options at the following locations:

You can download "Formal Languages and Automata Theory" by Puntambekar PDF for free from various online sources. However, please ensure that you are downloading from a reputable source to avoid any malware or viruses.