there r many good books, even zerodha varsity is very good, they all view OI in the same way... while trading i felt that all these traditional ways of viewing oi are completely wrong.... i view oi differently n i might be wrong also...
i found this video to be very helpful when i was learning about oi.... good luck
yes, it doesnt seem to be possible but my love for banknifty have make me illogical even 10000 quantity, that is, 400 lots in bnf, is difficult to get filled for same strike