An ‘at the money’ option is an option that would lead to zero cash flow to the holder if it were exercised immediately. An option on the index is at the money when the current index equals the strike price (i.e. spot price = strike price).
The best trading method is to take advantage of the crowd's greed and fear.
Long in a security (or commodity), means the holder of the position buy the security (or commodity) and will profit if the price of the security (or commodity) goes up in financial markets