Before discussing the strategy, it is important to know the break-up of the previous year questions asked for a sub-topic of different subjects. Accordingly the resources and planning should be and would be organized for a better strategy for Mains. If you have not gone through the analysis of GS-1, visit here (LINK)
The core subjects of GS-1 are-
Starting with Art & Culture-
Booklist/Resources suggested by toppers
Strategy
Indian Society
Booklist/Resources suggested by toppers
Strategy
History
For Mains this section involves –
Booklist/Resources suggested by toppers
Strategy
Geography
Booklist/Resources suggested by toppers
Strategy