Here is an excel workbook which comes handy when you want to try out various strategies using options.
You can download this at
(found under http://www.nsecentral.com/home/reference-books)
Also, visit http://optionstrategies.nsecentral.com/strategist/ for some live strategies based on Nifty Index (NSE India)
Another very good reference guide can be downloaded at http://www.nseindia.com/content/ncfm/sm_otsm.pdf