Everyone who is joining first year in BE/B.Tech degree program under Anna university affiliated colleges will have a common syllabus. And also the first year has been made non semester by Anna University. Only during the second year the students will be entering into their department. It is from the second year you will start learning your core subjects. For me being a ECE student my core subject was electronics circuit 1 and 2, I had a lot of interest in learning it but unfortunately my staff was not good which slowed me up in my core field. The best book for electronics circuits is 'Electronic Devices and Circuit Theory' by Robert L.Boylestad and Louis Nashelsky. It covers all the information about BJT, FET, CMOS, SCR, rectifiers and lots more. The book may seem to be too big but it's the best book in electronics. You can gain much knowledge from this book instead of getting a Bhakshi and mugging it up which is not going to be useful to you in anyway. If you have read this book please leave a comment about it.