does anyone know where I can find Houdini tutorial about “curve rendering”?

i dont know about tutorials but you can render a curve as solid geometry with the polywire SOP. does that help?

Take your curves and render them as any other geometry. Use the VEX Hair shader on the curves.

How can I use renderman shaders to render Houdini's curves?
I tried to assign my own renderman shader but I was unable to have the curves rendered. (it worked with mentra renderer.)

Can anyone give me a hint?