The phrase 'briefed him about' is correct and can be used in written English.
You would use it to indicate that someone gave another person specific information or details about something. For example: The supervisor briefed him about the safety procedures before he could start work.
Reid's letter came after senior intelligence officials briefed him about Russian hacking of U.S. political organizations and election systems.
His hosts briefed him about the Darwin plan, explaining it as continuation of a longstanding military partnership under the ANZUS Treaty signed in 1951.
The report did not criticize attorney general Eric Holder, but said lower-level officials should have briefed him about the investigation much earlier.
Echoing earlier comments, Mr. Bush said he learned about the tapes only on Dec. 6, when Gen. Michael V. Hayden, the C.I.A. director, briefed him about them.
He was shadow foreign secretary and I, as minister of state at the Foreign Office, "briefed" him about the state of Britain's relations with the rest of the world.
I had briefed him about my O'Hara history, revealing that even after being with her on five different occasions, I still felt star struck.
Beddington said that he had met Lord Lawson to brief him about the science of global warming.
But in a nod to the Dalai Lama's importance, India's most senior foreign service official came here to brief him about Mr. Singh's trip.
After scanning the first few paragraphs -- a sarcastic, profanity-laced description of General McChrystal's disgust at having to dine with a French minister to brief him about the war -- Mr. Obama had read enough, a senior administration official said.
A Force Behind Decisions "I'm not a figurehead here!" the vice president snapped, after a cluster of aides had failed to adequately brief him about an event in New Hampshire in the primaries.
Our Athens correspondent Helena Smith reports: The eurozone crisis was meant to be high on the agenda when the radical left leader met Greece's president, Karolos Papoulias, to brief him about his recent trip to Germany and tour of Latin America in the run-up to Christmas.
