What is the difference between a simple product type and a virtual product type?

Customer emails and wants to cancel their order. Bummer. What are the 2 ways you can find the order?

Where can I find system.log and exception.log debugging?

Setting that determines that product will show on the search page and not on the category listing?

A new product still shows out-of-stock, even though it shows that there are 20 available. Which index should we rebuild?

The store offers a free shipping coupon for orders over $50. The owner wants to change it to order over $75. Where is that done?

in the Magento backend, one product can belong to only one category.

During Magento 1.9 installation, which is a required field/are required fields in the Web Access options section?

When specifying a custom connection resource for a module that handles the DB reads. which is a possible resource name?

Which databases does Magento support?

Does Magento send order confirmation emails to the store owner by default?