-Pimsleur (Current Level 5)
-Michel Thomas (Basic - unfinished)
-The State Department has made its learning materials public domain (Unfinished).
-Reading (miscellaneous books and childrens stories).
-Listening to Howtospanish Podcast and reading the transcripts.
Various research papers on language learning:
Olle Kjellin's papers on prosody
Podcast on chorusing and Chinese with Karen Chung