Hi all. How does it work with the above? If I make the first attack and it hits but the second misses do I discard the card?

This is covered in the FAQ under Cluster Missiles. If either attack hits, then the Missile is discarded.

Thanks, where can I find the FAQs?

FAQs can be found on the support page (to find yourself, go to the top of the page, Catalog - Miniatures - X-Wing - Support)

Download the rulebook as well. Then you can search for keywords when you're looking for something. It's much faster than thumbing through the pages.