i dont think its possible to teach someone else the "sharingan"
its a bloodline limit, and its special only to the uchiha clan, if it can be taught to someone else, then the uchiha clan wouldnt be that special

kakashi for sure got hold of the sharingan from someone, even orochimaru mentioned that

and if the sharingan can be taught to someone, why would orochimaru want sasukes body if he can learn the sharingan, and then he'd be able to learn all his techniques