hi praveen congrats for making progress in options
,
i didnt get ur qs,point me if m understanding correctly ,
if u want to see open interest there is column on o.i. on ur trading terminal,go through this,or ask the broker( i use odin,& neat n its in column profile settings)and if u want to compare current o.i. with historic o.i. kotaksecurities.com is helpful( though m not sure its allows user for free access that section,if not search4google)
& about dilemma of s/l i rely on indicators of technical analysis,boilinger band,vix r helpful,( adx is most helpful 4me).
s/l is very personal thing,it varies from person to person with his risk profile.