Magento

I have been browsing around the Magento for a while. I haven’t installed it yet, but it looks impressing.

I did not notice payment method setup in the demo admin, or even shipping rate setup.
How do I setup those two major features?

Well that would depend completely on which payment method you want to use and which shipping method you want to use.  The answer you need could be one of several depending on which methods you’re wanting to use.  Ultimately, you adjust them all from the admin panel under System > Configuration.

Okay, so I installed it.
I can figure out the payment systems easily.
Now it comes to the Shipping rates. How do I set different rates based on the weight (or categories if possible)?

Hi, try this http://www.magentocommerce.com/knowledge-base/entry/how-do-i-set-up-table-rate-shipping/
I’ve tried… powerful

HTH
Danilo