Every spinner will create yarn that just doesn't work, and even experienced spinners have bad spinning sessions. Let's say the yarn won't hold together, or...

You want to become a handspinner, and you've chosen a spindle or spinning wheel. What other tools—besides spinnable fiber—will you need to get started?  ...

Spinners have a lot of fiber options for their yarns. They can choose the type of fiber and fiber prep best suited for a particular project....

The flyer won’t turn. The poly or cotton drive band is not over the flyer whorl—set the drive band in a groove of the whorl....

Look for a nearby woodworker or woodworking guild. Take the part(s) to them for a consultation—it's usually not hard to make replicas.