Want to know easy n best bee book for 1st yr engineering students

Btech 1st year 1st sem cse.bee text book PDF of 2019

https://www.mheducation.co.in/engineering/electrical-engineering/basic-electrical-engineering/text-book

These books are very good .
Follow a single book sincerely

You can also study from nptel it's very great .
Videos are given by IIT professors
https://nptel.ac.in/downloads/108105053/

Abhishek charakraborty and B L thareja  and SK Bhatacharya are good books for bee . Visit pdfdrive if you want to download free e books .