SideFX Houdini Official Tutors + Project Files is all tutors (with project files) what I found sidefx.com.
All categorys:

01 - User Guide (700MB)
02 - Getting Started (188MB)
03 - General (1.51GB)
04 - Modeling (654MB)
05 - Animation (788MB)
06 - Character (292MB)
07 - Rendering (218MB)
08 - Effects (1.19GB)
09 - Dynamics (3.00GB)
10 - User Tutorials (1.20GB)
11 - Master Classes (3.10GB)
12 - Archived Tutorials (155MB)

SideFX Learning Category

Download:

FILESONIC.COM
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UPLOADED.TO
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UPLOADING.COM
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