This is a guide in MOHO on how to start building a rig with no bones, using only curvers. It does not go over the full process but enough to get started by showing how to build a boneless arm an arm and connecting to the boneless body with IK.
Feel free to ask any questions in the comments.
Let me know also if you would like a full tutorial on making Boneless Rigs and advanced 360 turnaround rigs using boneless techniques
Huge shout out to Victor Paredes on showing how to IK curvers in this video:
https://www.youtube.com/watch?v=M4WacKi2xdE