How to Prepare for OPSC OAS/OCS Mains Exam? OCS Mains Preparation Strategy|GS 1 GS 2 Syllabus&Source

PREPARATION STRATEGY FOR UPSC/OPSC (PRELIMS) by Suraj Nayak S (Rank 152 ,OPSC OCS 2021-22)

This was my 1st attempt in the odisha civil services examination.

MY YOUTUBE CHANNEL =    / @surajnayaksocs152(   for further guidance and doubt clearing session)
Also I will upload important general studies topic lectures whenever necessary or if times allows me to do videos.

My personal telegram Id - @surajnayaks (here you can ask your doubts and queries)

My public telegram Id - surajnayak_25
(Here I will be uploading my notes)


POLITY
First go for 9th NCERT
M laxmikant
Current affairs of polity
YOUTUBE SOURCE - Harshit dwivedi education(m laxmikant series , finology legal for supreme court case laws

GEOGRAPHY
ncert 11th class part 1 , part 2
Ncert 12th class part 1 , part 2
Reference -Gc leong ( but generally i don't recommend this)
Supplement with the youtube (mainly the oceanography, climatology portion)
ODISHA GEOGRAPHY (I will share the notes)
Current affairs of geography
YOUTUBE SOURCE- I didn't referred any channel , as I was very strong in geography (my background is applied geology)

ECONOMICS
Ncert 11th (very imp) (mains pov)
Ncert 12th Macroeconomics book (read thoroughly and leave the calculation portions of this book as they are not required for civil services)
Current affairs plays a imp role (so be through with economics current affairs)

HISTORY

ANCIENT HISTORY
Tamil Nadu board part 1 book OR Ancient history by RS SHARMA PLUS (u can aslo
Supplement with youtube ( I didn't relied on any single channel , i used to refer many channels)
N.B make notes , don't do deep thesis in those subjects , and think about cost benefit ratio

MEDIEVAL HISTORY
Tamil Nadu board part 1 OR Medieval history by Satis Chandra (u can aslo
Supplement with youtube ( I didn't relied on any single channel , i used to refer many channels)
N.B make notes , don't do deep thesis in those subjects , and think about cost benefit ratio

MODERN HISTORY
Tamil Nadu board part 2
SPECTRUM ( this book is like Bible of modern history for civil services examination)
YOUTUBE SOURCE - Pratik Nayak modern history lectures , path finder modern history lectures by manipal rathore

ART AND CULTURE
11th Class NCERT (Fine arts book)
supplement for prelims - only ias crisp art n culture pdf

CURRENT AFFAIRS OF HISTORY
Be through with history CA whatever in the news , upsc or opsc frames question from this only

N.B = If possible , make crisp short notes
I will also upload the notes in my telegram channel ( whatever I made)
For ancient and medieval also, I will upload full notes in pdf )

ENVIRONMENT & ECOLOGY
Env eco (shankar ias book) . To be Frank I didn't referred this book , it's too bulky and cost benefit ratio is very low .
YOUTUBE SOURCE - OOKULIAS classes of env ecology
N.B = CURRENT AFFAIRS of env eco plays most important role in this examinations.so be through with the CA

SCIENCE AND TECHNOLOGY
Listen sc and tech means it's the applied sc and tech portion - biotechnology, nano technology , laser technology , defence technology, etc . For those topics u can randomly see in the youtube.
Current affairs plays a imp role . So be through with current affairs.
N.B = I will upload all the notes in the Telegram channel

CURRENT AFFAIRS
I used to follow only 1 channel for current affairs and editorial analysis ( TEMSIAS)
Also i used to supplement env eco CA , sc tech CA from vision ias or insights ias

FOR ODISHA PERSPECTIVE TOPICS - Follow " KNOW YOUR STATE ODISHA BOOK BY ARIHANT PUBLICATION"
Supplement - for odisha geography and history , search odisha history and geography by bhupendra pradhan