Preparing for GATE in the CS & IT group requires access to quality resources. Here are some **free online courses** and **books** that can help:

### **Free Online Courses:**

1. **NPTEL (National Programme on Technology Enhanced Learning)**

- NPTEL offers **free GATE preparation courses** for CS & IT subjects like Data Structures, Algorithms, Operating Systems, and more. You can access lectures from top IIT professors.

- Website: [NPTEL](https://nptel.ac.in/)

2. **YouTube Channels**

- **Gate Smashers**: Provides comprehensive GATE CS lectures for each topic, with detailed explanations and problem-solving sessions.

- **Knowledge Gate**: Focuses on GATE CS & IT preparation with free tutorials on important subjects.

- **Unacademy**: Offers free GATE CS & IT preparation videos. You can also attend live sessions.

3. **GeeksforGeeks**

- GeeksforGeeks offers free study materials, coding problems, and tutorials for key GATE topics like algorithms, theory of computation, and programming.

### **Free Books:**

1. **"Introduction to Algorithms" by Cormen** (PDF available online)

- A great resource for Data Structures and Algorithms.

2. **"Computer Networks" by Andrew S. Tanenbaum** (PDF versions available)

- Essential for networking concepts.

3. **GATE Overflow** (Website)

- Offers **GATE previous year question papers** with detailed solutions for free.

Utilize these resources consistently, and focus on practicing previous year papers to sharpen your problem-solving skills.

hope this helps yoiu!!

To prepare for GATE in the CS & IT group, here are some great free resources for online courses and books:

Online Courses:

• NPTEL (National Programme on Technology Enhanced Learning):

NPTEL is offering free courses by top Indian institutes such as IITs and IISc.

Subject of relevance for GATE CS & IT: Algorithms, Data Structures, Computer Networks, Operating Systems, Theory of Computation, etc.

• GeeksforGeeks:

Free tutorials and coding exercises offered on topics such as Data Structures, Algorithms, Operating Systems, etc.

• GATE Overflow:

A community-driven site for GATE preparation on which you can find previous year papers, solutions, and study resources.

• FreeCodeCamp:

Provides in-depth tutorials on various programming topics such as Data Structures, Algorithms, Databases, etc.

Books (Freely Available PDFs or Public Domain):

• Introduction to Algorithms, by Cormen, Leiserson, Rivest, Stein

A book of algorithms to master, which is very important for GATE.

• Computer Networks (Andrew S. Tanenbaum)

This book well covers the basics about computer networks.

You may find free pdf versions online. Or older versions.

• Operating System Concepts (Abraham Silberschatz)

Good to get an understanding of operating systems, which is critical for GATE.

• Discrete Mathematics and Its Applications (Kenneth H. Rosen)

Logic, combinatorics graph theory, etc., are very well covered in these books.

• Theory of Computation (by Michael Sipser)

Formal languages and automata theory-Excellent book.

Can be found free of charge on the web

Use such courses and books together for solid preparation for GATE. Let me know if you need more specific material and guidance.