The word 'mastering' is correct and usable in written English.
You can use it to refer to the process of gaining knowledge or skill in something. For example, "She is mastering Spanish by taking an online course."
Related: Salutin' Putin: our lives inside a Russian troll house First Look Media, which published the leaks, described it as the UK spy agency's weapon in mastering the dark arts of the internet, a "hacker's buffet for wreaking online havoc".
"We have made progress on the mental side and on mastering our games and on being less naive and better balanced and knowing what to do.
You don't get to become a Director of Pediatric Neurosurgery at Johns Hopkins and successfully separate twins conjoined at the head without mastering a great deal of formidable and specialized knowledge.
Whether you want to make a drama or a comedy, a series or a serial, getting a show on-screen means mastering a seemingly impenetrable world of pitch documents, from step-outlines to show bibles.
She was more like a clever lawyer, quick at picking up a brief, and mastering all the detail.
Greek-Cypriot civil servants, with their background of British law and a healthy economy behind them, are fast mastering the candidate-countries' dossiers.Moreover, the Greeks, both in Cyprus and in Athens, have recently gone out of their way not to annoy the EU or NATO.
Japan's political culture is so closed that locals have a big head start in mastering the nuances, says Dennis Johnson of George Washington University's School of Political Management.
He threw himself into mastering the craft of his French contemporaries, and managed to make enough of an impression to secure his first exhibition the next year.
The firm made handsome profits trading in the bond markets, where it won fame and power in the 1980s, but it had a much more difficult time mastering the cross-subsidies in the equities business.
Yet indifference from those accustomed to managing the flow of information from politicians to voters failed to stop the speech, delivered after the prime minister's own address to the Strasbourg parliament, from attracting more than a million internet viewings within a week.For the British left, it was painful confirmation of its tardiness in mastering new media.
That would cause even greater alarm, since mastering the techniques involved in enriching uranium (so far Iran claims to have done only experimental work) is also one of the biggest hurdles to bomb-building.In this section Now it gets sticky Democracy, Egyptian style New Hamas, new Palestine?
