From BB to Nexus 4 Help a new brother!

So this is pretty simple. Can you help a new brother?

Here are the facts:

  • Bought a Nexus 4 today
  • First Android phone
  • Had a Blackberry.....
  • I am in Canada (not in an Igloo)

Here is when you guys come in:

  • App recommendations (not just games)
  • Games...(thought about it and never mind the above specification)
  • Tips & Tricks with Jelly Bean?
  • Awesome wallpapers?
  • Anything else that could possibly be somewhat close to being useful?

Thanks in advance to everyone who helps!