There are lots of quick guidance books for D. Pharmacy. Many ebooks are available online and you can use them to enhance your study. Some suggestions are as follows:

For 1st Year D. Pharmacy:
1. Principles of Anatomy and Physiology by Tortora Gerad J. and Nicholas P.
2. Physiology of Human Body by Guyton
For 2nd Year D. Pharmacy:
1. Text-book of Pathology by Harsh Mohan

For 3rd Year D. Pharmacy:
1. Basic and Clinical Pharmacology by Katzung
2. The Pharmacological Basis of therapeutics by Goodman and Gilman
For 4th Year D. Pharmacy:
1. Clinical Pharmacology and Therapeutics by Roger Walker
2. Applied Therapeutics: The Clinical use of drugs by Lloyd Young and Koda
For 5th Year D. Pharmacy:
1. Textbook of Clinical Trials edited by David Machin, Simon Day and Sylvan Green
You can find these books in the following website:
https://pharmdia.com/pharm-d-books-pdf/