Races and Grouping Question
You can actually join your wife in her starting zone (or vice versa) starting right after you get out of the tutorial instance for your race.
When you step out of your instance, head into your home city (it should be very close by), open up your map and look for a big purple coloured circle on it. This is the asura gate of your city. Find it and walk through it. You will find yourself warped to Lion’s Arch (which is a big hub city where all the races mingle in a melting pot). You land in a big square/plaza full of purple portals. Walk up close to them and look for the one that says the name of the city of the racial area you want to go to a voila! You’re there and ready to go.
The cities are: Rata Sum – Asura, The Grove – Sylvari, Black Citadel – Charr, Divinity’s Reach – Human, Hoelbrak – Norn.
You can travel back and forth between your two starter areas if you wish, or stick to one starter area, or visit them all. Up to you where you go from there really.