For those of you that haven't followed the development of SDR in the past, a quick introduction on how to get started.
There is a Wiki dedicated to SDR: http://sharpdevelopreports.net/ (please note that it hasn't been updated yet for the fact that SDR is now back in the fold with SharpDevelop)
It contains a feature tour (with screenshots) to give you an idea how to get up and running quickly. I'd also recommend reading the what's new blog post from the SDR beta, as it contains information on the newly added functionality (such as expression support).
Speaking of support: there is a dedicated forum for SDR on our community site, please let me know about problems, ideas, fixes et al there!