Here are a few caption options for your first World of Tanks video:

1. "Ready, aim, fire! My World of Tanks journey begins! #WorldOfTanks #Gaming"
2. "Tank you very much! Join me for my first battle in World of Tanks! #WoT #GamingCommunity"
3. "Rolling out! My inaugural World of Tanks video is live! #WorldOfTanks #TankLife"
4. "Get ready for a blast! My first World of Tanks video is here! #WoT #GamingContent"
5. "New tank on the block! Join me for my first World of Tanks adventure! #WorldOfTanks #GamingAdventures"

Feel free to pick the one that suits your style, or let me know if you need any further assistance!