What are the best books for the 1st semester CSE at VTU?

You don't start the CSE syllabus right away in the first year. Math, electronics core topics, English, and other subjects are common. You should read the foreign writers suggested for applied math and sciences. Foreign books usually go into great detail about a topic and are of far higher quality than local publications. I would advise you to use them for your preparation.

Here are some of the recommended books. 

For chemistry cycle-

• Math 1 - Chandrashekhar
• Chemistry - BS Jaiprakash
• CCP - Padma Reddy
• Caed - K R Gopalkrishna
• Basic Electronics - Godse and Bakshi

For Physics Cycle-

• Math 2 - Chandrashekhar
• Physics - SP Basavaraju
• Civil - Bhavikatti
• Mechanical - KR Gopalkrishna
• Basic Electrical - MV Rao

For CPP, your college will help you out with the notes. These are the authors that you can refer to during your 1st year. There is no need to refer to any books for EVS.