More Formal:
* Informed
* Notified
* Apprised
* Instructed
* Advised
* Briefed
* Made aware
More Informal:
* Heard
* Told off (if it's negative)
* Given the lowdown
* Filled in
* Put in the loop
* Let in on the secret
Other Options:
* Communicated to
* Made aware of
* Given information
* Convinced (if the person was persuaded)
Example:
* Formal: "I was informed of the new policy."
* Informal: "I heard about the new policy."
* Specific: "I was convinced that the new policy was a good idea."
The best word to use will depend on the specific situation and the tone you want to convey.