Sling IDE Tooling User Guide
Prerequisites
The Sling IDE tooling is known to work on Eclipse versions starting with Indigo. There is a hard dependency on the faceted project framework, which is included in the 'Eclipse IDE for Java EE Developers' package. If you're running a different package, you can always install it from the main Eclipse update site.
There is an optional feature which relies on m2eclipse. For now it only provides project creation wizards, so if you don't use Maven you don't have to install it.
Installation
There is no official release yet, but I ( Robert Munteanu ) am maintaining unnoficial preview builds at http://people.apache.org/~rombert/sling/ide/preview/ . Feel tree to give them a try.