In the next days we will release CRX Quickstart. CRX Quickstart bundles CRX and Apache Sling into one installer. This allows you to get going very quickly with JCR-backed web development. In this 15min screencast I present first steps with CRX Quickstart. The code I use is attached to this post.
Update: for doing the examples yourself with current versions of Sling or CRX Quickstart please see the errata before.