The plattaform GLASS (Gemstone, Linux, Apache, Smalltalk and Seaside) has a GLASS Virtual Appliance to download (It's a VWware image so you will need to install the VMWare Player). It's the best way to test it without any kind of instalation. Please, before downloading the appliance be sure that you have a 64bit processor. The Wmware is running with an Unbutu/64 OS.
Another tip: Read how to configure the network or your services will be unavailable.
Since 2004, ClubSmalltalk is a non-profit organization which congregates Smalltalk programmers and enthusiastics. The big idea behind this website is to provide a source of information about Smalltalk in general.
The Smalltalk community has not good sources of information, or they're all over the net, and sometimes it's difficult to find them.
If you want to contribute, you're welcome!