I want to clear AIIMS and get delhi ONLY and want to score above 95% in ISC 2018 boards! But I haven't joined any formal coaching for PMTs!!

In order to crack AIIMS exam make sure you complete NCERT books, Make important notes which will help you in revision. Go through past year papers to understand the exam pattern and level of questions. AIIMS paper is online. So, make sure you solve many mock test papers. You should also aware of general knowledge.

Best Biology Books for AIIMS

• Trueman’s Biology Vol. 1 & 2
• Objective Biology by Dinesh
• Pradeep Publication’s Biology
• Prakash Objective Biology
• A C Dutta for Botany ( Oxford Publication)

Best Physics Books for AIIMS

• H C Verma for Physics
• Aggarwals’ Concept of Competition Physics for CBSE PMT
• NCERT Physics: CBSE PMT by Anil Aggarwal (Set of 3 Volumes)
• NCERT- Physics Part 1 & 2

Best Chemistry Books for AIIMS

• Modern ABC of Chemistry for Class 11th & 12th (Vol. 1 & 2)
• Physical Chemistry by O P Tandon
• Arihant Organic Chemistry
• Dinesh Chemistry
• Concise Inorganic Chemistry by J.D. Lee for Inorganic Chemistry

All the Best!!

You should join a good coaching institute if you want to achieve these targets. Believe in yourself, if you are not confident then definitely you will fail...so don't lose hope and be confident and join a good coaching institute for  PMTs right from now.
Good luck!