cut eyeteeth on

cut eyeteeth on (something)

To gain experience with something, especially at a young age. A reference to one's teeth coming in when one is a child; eyeteeth are the canines. Oh, I cut my eyeteeth on those kinds of equations! Give me a challenging problem for a change! Jen may be young, but she cut her eyeteeth on academic writing, so her perspective and expertise will be invaluable to us.
See also: cut, eyetooth, on

cut one's eyeteeth on something

Fig. to grow up experiencing something; to have had the experience of dealing with something [successfully] at a very early age. My grandfather taught me how to fish, so I cut my eyeteeth on fishing. Fred cut his eyeteeth on writing; both his parents were authors.
See also: cut, eyetooth, on