title: Event Receiver - How to update fields from List A based on List B
body: <p>I'm new to Event Receivers and I never have done one. Here is my situation, I have 2 lists. First list contains fields: Software Name, Quantity, Used, Available, and COUNT [Software Name: (Count Related)] from second list. Second list contains field: Software Name (Lookup from first list). How do I calculate and update fields Used and Available in the first list when a new item is added or updated in the second list? Any examples or links are really appreciated</p>
  
  <p>Regards,</p>
  
  <p>Fernando</p>