Hi,
Please, look at:
-http://forums.odforce.net/topic/17105-short-and-sweet-op-centric-lessons/
!!post #7 OLD SCHOOL!!!.
and
-http://forums.odforce.net/topic/20723-the-relationship-between-the-concept-of-a-shader-a-material-and-vex/
!!post #8 OLD SCHOOL!!!
1. http://www.papicrunch.net/GC-houdb/?collec=0&model=list&filter=none&sort=idASC&p=6
2. http://www.sidefx.com/index.php?option=com_content&task=blogsection&id=14&Itemid=132
2. http://vimeo.com/channels/54102
4. http://lesterbanks.com/category/houdini/
5. http://vimeo.com/groups/houdiniofficialtutorials
6. https://www.youtube.com/playlist?list=PLShEm1_z6_cyBOAKQSH2ck-enGSnovMjD
7. https://www.youtube.com/results?search_query=houdini+digital+asset&page=1
8. http://houdini.dreamerzstudio.net/
9. http://training.adrianlazar.com/free-houdini-training/
10. http://www.youtube.com/user/Khermah/videos?view=0&sort=dd&tag_id=
11.
12. https://www.youtube.com/results?search_query=houdini+modeling+tutorial&page=1