Bill Tindall
I took a one week class at a working shop making something that included veneering a panel, a drawer, a door , case construction, French feet, cock beading. Without considerable experience going in I would not have gotten nearly as much out of it. In the week we failed to finish the door nor do any finishing.

Still to learn would be finishing, carving, turning, other foot types -Queen Ann, Bracket, etc., design. bending, inlay, various machines, etc.

I am thinking something like 2 years to cover enough that one could do it professionally.