1️⃣ Book List with URLs
Title: Telecommunications Switching Systems and Networks – Thiagarajan Viswanathan
URL: https://www.amazon.in/s?k=Telecommunications+Switching+Systems+and+Networks+Thiagarajan+Viswanathan
Title: Electronic Devices and Circuit Theory – Robert Boylestad
URL: https://www.amazon.in/s?k=Electronic+Devices+and+Circuit+Theory+Boylestad
Title: Communication Systems – Simon Haykin
URL: https://www.amazon.in/s?k=Communication+Systems+Simon+Haykin
Title: Data Communications and Networking – Behrouz Forouzan
URL: https://www.amazon.in/s?k=Data+Communications+and+Networking+Forouzan
Title: Computer Networks – Andrew S. Tanenbaum
URL: https://www.amazon.in/s?k=Computer+Networks+Tanenbaum
Title: Quantitative Aptitude – R.S. Aggarwal
URL: https://www.amazon.in/s?k=Quantitative+Aptitude+RS+Aggarwal
2️⃣ Official PDF / Notification URLs
Title: BSNL Official Website
URL: https://www.bsnl.co.in
Title: BSNL Recruitment Portal
URL: https://www.externalexam.bsnl.co.in
Title: BSNL Careers Page
URL: https://www.bsnl.co.in/opencms/bsnl/BSNL/about_us/career.html
3️⃣ Best Websites / Tutorials
Title: NPTEL Engineering Courses
URL: https://nptel.ac.in
Title: SWAYAM Courses
URL: https://swayam.gov.in
Title: GeeksforGeeks
URL: https://www.geeksforgeeks.org
Title: TutorialsPoint Telecom Tutorials
URL: https://www.tutorialspoint.com
Title: IEEE Learning Network
URL: https://learning.ieee.org
Title: Telecom Regulatory Authority of India
URL: https://www.trai.gov.in
4️⃣ Video Courses / Lectures
Title: NPTEL Official Channel
URL: https://www.youtube.com/@nptelhrd
Title: Telecom Engineering Course
URL: https://www.youtube.com/results?search_query=telecommunication+engineering+course
Title: Computer Networks Complete Course
URL: https://www.youtube.com/results?search_query=computer+networks+course
Title: Digital Communication Course
URL: https://www.youtube.com/results?search_query=digital+communication+course
Title: Quantitative Aptitude Course
URL: https://www.youtube.com/results?search_query=quantitative+aptitude+course
Title: Reasoning Ability Course
URL: https://www.youtube.com/results?search_query=logical+reasoning+course
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