How does stop loss help during buying with Limit order?

May be silly question but I’m new to trading. Suppose there an XYZ stock trading at 100RS/share. How can i use stop loss with Limit order while buying and how will it help me.

A stop-loss order is designed to limit in an investor’s loss on a position in a security. Although most investors associate a stop-loss order only with a long position, it can also be used for a short position, in which case the security would be bought if it trades above a defined price. A stop-loss order takes the sensation out of trading decisions and can be particularly handy when one is on vacation or cannot watch others position. To know more about comex trading tips, visit blog at MMF Solutions.