Which magento software to download?

[kmetek]

for a middle sized online store?

Don't Magetnto have something like Prestashop cloud store?

[Dmitry_Fedyuk]

1)

Magento has only 2 versions: free Community Edition and paid Enterprise Edition.

Start with Community Edition. If you would need for Enterprise Edition you will definitely know it.

2)

Magento had a cloud version some years ago (it was named "Magento Go") but shut it down, I think, because Magento is for more complex tasks than Prestashop and a cloud software is not so customizable and extendable to solve complex tasks. 

[kmetek]

so if i want to start learning i go with community edition?

for business purposses aka online stores there's enterprise edition?

thanks.

[kmetek]

another question, do i need anything else? i have windows 7.