cut teeth on

cut (one's) teeth on (something)

To gain experience with something, especially at a young age (when one's teeth would be coming in). Oh, I cut my teeth on those kinds of equations! Give me a challenging problem for a change! Jen may be young, but she cut her teeth on academic writing, so her perspective and expertise will be invaluable to us.
See also: cut, on, teeth
Farlex Dictionary of Idioms.

cut (one's) teeth on

To learn or do as a beginner or at the start of one's career.
See also: cut, on, teeth
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • cut (one's) teeth
  • cut (one's) teeth on (something)
  • cut one's teeth on
  • cut teeth
  • cut your teeth
  • eyetooth
  • cut one's eyeteeth
  • cut (one's) eyeteeth
  • be long in the tooth
  • cut (one's) eyeteeth on (something)