Hi,
I am new to Houdini and trying to learn more about particles.
I am interested in rendering millions of particles to get a ‘Krakatoa’ look.
Is this possible with Houdini? Can you point me to some good tutorials?

Thanks!!

For sure! here are a list of some good resources I always keep bookmarked.

Youtube VFX channels:

Junichiro Horikawa:
https://www.youtube.com/channel/UC5NStd0QmACnWs9DzqJ3vHg [www.youtube.com]

Doxia Studio:
https://www.youtube.com/channel/UCYFRTyKDYUe4R2OgBVZUORA [www.youtube.com]

VFX Hive:
https://www.youtube.com/channel/UChjPbw5vMBUTLN0teKEM0BA [www.youtube.com]

Nine Between:
https://www.youtube.com/channel/UCRVaHP-vsYOeuZnn2DTutpQ [www.youtube.com]

Particle FX videos:

particle scatter man:
https://www.youtube.com/watch?v=BucG27RUONE&list=PLrGnfPAJAdTfBsV3_jRgN0Y9evCCIkjUc&index=4&t=0s [www.youtube.com]

sand explosion: https://www.youtube.com/watch?v=aWf2Tdri9yk&list=PLrGnfPAJAdTfBsV3_jRgN0Y9evCCIkjUc&index=28&t=0s [www.youtube.com]

Houdini particle basics:
https://www.youtube.com/watch?v=riUx1ILoedc&list=PLrGnfPAJAdTfBsV3_jRgN0Y9evCCIkjUc&index=41&t=0s [www.youtube.com]

Particle Funimentals:
https://www.youtube.com/watch?v=Q7fYhGl-GOM&list=PLrGnfPAJAdTfBsV3_jRgN0Y9evCCIkjUc&index=56&t=0s [www.youtube.com]

vellum grains:

Vellum Grains rainbow:
https://www.youtube.com/watch?v=jsM5uD-bkjU [www.youtube.com]

Vellum Grain Basics:
https://www.youtube.com/watch?v=hQN5pUrYjKQ [www.youtube.com]

Hope this helps