Informal learning resources have the potential to reach millions of currently underserved learners teaching themselves about the basics of computing using the Web, example code, peer networks, books, and other materials. In this paper, we investigate the effectiveness of case-based learning aids (CBLAs) as a resource to scaffold informal education in scripting for web and graphic design. We present the design of a new CBLA called ScriptABLE and outline initial evaluation results with respect to its ability to foster both programming ability and more expert understanding of computing concepts.