I posted a topic before asking for advice to choose a school to pursue a career in VFX industry for a completely beginner with no clear vision. After searching intensely in various areas in VFX I see myself doing FX (Houdini), how could I become a FX TD? which basic skills and tools I need to be aware of before stepping into Houdini? I'd prefer having online course to have the chance to network with students and mentors. I checked CG spectrum Houdini course (10 months) and it says it's recommended to have 3d principles before enrolling for the course, what principles I should learn?