Magento looks really good however from the first point of view it feels a little complicated for somebody who has never had an online store. I have a few questions regarding the way the system works if you guys are familiar with it.

How do the gateways work and do they allow gateways

How is the shipping arrangements and does it include all carriers.

Is the catalog easy to manage and run huge inventories?

How is the templating system: Hard to skin, mediocre, pretty straight forward. Pick one please.