According to Translate.google.com, the literal translation of Triple H's phrase Vocare Ad Regnum in English is Call to Kingdom signifying being called or summoned to rule as a king in English.
Visit fun sites that offer games to help you practice and learn Latin and quizzes.
Latin is closer to English than a lot of languages, like Swahili or Mandarin. That's because Latin and English are both in the same language family -- called Indo-European. Sharing a language family doesn't necessarily make it easy for an English speaker to learn Latin, the ancient language of the Romans.
Since the Romance languages evolved from Latin, familiarity with them helps. Check out these tips about the parts of speech in Latin from About.com.