charmed, normally sunni and shia are by blood, see it's all the belief, the moment u change ur belief with intensions, u belong to that class. very straight forward! There is nothing something like POPE in islam but we muslims believe that Jeasus is alive and He will be sent back to earth to lead Muslims near the dooms day.

Wudu- Abolution, being clean the way prophet Mohammad PBUH told inorder to perform Salat- (Muslim Prayer).

Ahaadith- Are the exact words of Prophet Mohammad PBUH noted down by the companions of Prophet Mohammad PBUH.

Don't buy Quran, coz it's not that easy to understand. Start discussing things with people who preach Islam. Normally people from Pakistan go to west and other countries to preach islam (called jamaat), you need to understand the basics first. InshaAllah once u build ur basics it'll become easier for you to understand what is islam and what Allah says to us.

The moment you accept Islam, Allah clears all your previous sins like you just born today, and if you die that day you'll go to heaven.