Get your Tennessee driver license
Tennessee asks new residents to obtain a TN driver license no later than 30 days after establishing residency. You visit a full-service Driver Services Center with proof of citizenship or legal presence, your Social Security number, and two proofs of your Tennessee address. You surrender your old license at the counter, since Tennessee doesn't let you hold two.
If you're coming from California: Tennessee now requires anyone transferring a license from California (and a handful of other states) to first pull a Motor Vehicle Record (MVR) from their former state. Request it before you go.
Source: TN Dept. of Safety & Homeland Security