Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
If you now how to play a dps then i don't need to explain it too you again. pretty much its just a build order that i have found incredibly useful. The philosopher stone should be finished as soon as possible to start the extra gold flow and to get the mana regen to spam volley for harrass.