Essential
CL01 – SL4 Overview (Demo files) – Karen Corby
CL21 – Amazing Bus Apps with RIA Services (Demo files)– Brad Abrams
CL19 – Building LOB Apps (Demo files) – David Poll
CL20 – Trusted Apps Out of Browser (Demo files 1, 2) – Joe Stegman
Useful
CL07 – Mastering RIA Services – Dinesh Kulkarni
CL06 – Networking and Web Services in SL4 – Yavor Georgiev
FT24 – Extensible RIA with MEF – Glenn Block
CL22 – Building Large-Scale Apps with Silverlight – John Papa