Getting into ARMs, (using PICs for a decade) and the Kinetis K02 looks like a great place to start. But a bit unsure what I need to get started. I downloaded Kinetis Design Studio, and it looks like I need an SDK... which the SDK downloads do not seem to have for the KE02. The FRDM-KE02Z40M board details page has some quick-start links to OpenSDA (not sure what that is yet), and to various IDEs but not Kinetis Design Studio.
Before I go down a spiral of installing tons of stuff just to figure out what is what, and then sift out what I don't need, is there any page or doc that explains all these terms/tools/software in a nutshell so I can quickly pick a path to get started with?