Wargaming is participating in E3 this year again. And as they do with events like this, major on-line and offline events are coming in that time, to get new users to the game and get you, the regular user, excited a bit more about WoT and other WarGaming games by giving us some free gold in our accounts.
Like World of Warplanes. These set of summer events revolves completely around WoWP, but the gold you win can be spent in World of Tanks.
In the Ground Control to Major_Rampage event all you have to do is hit as many ground targets as you can between June 3rd & 7th . The top 10 players, who hit the most ground targets in that period, will be awarded 4000 gold on their unified WarGaming account (meaning you get 4000 gold to spend either in WoT or WoWP)
Flying High Five Tournament is a 5 on 5 tournament where you can win up to 10,555 gold on June 5th.
Each day, the top 10 pilots who destroy the most enemy planes or get the most assists in destroying enemy planes while piloting a tier IV or tier V aircraft will get 5,000 gold added to their World of Tanks account in the Earn Your Wings event.
And last but not least, the Get Airborne Event, where all you have to do is play at least 200 games total between June 10th and 14th to earn yourself 5000 gold on both your WoT and WoWP accounts.