The word "glad" is similar in meaning to "happy" but is not as common. It most commonly appears in certain set phrases like "glad ___ is over". Some other phrases that use "glad" are:

• (be) glad to see(clause)

  I'm very glad to see that the Obama administration is taking the lead on this and trying to come up with some way to address the problem.

• I'm glad you're here. / I'm glad to be here.
• I'm glad you came.
• glad to meet (someone)

  I'm so glad to finally meet you! I've heard so much about you!

• (be) glad (that something) finally (happened)

  I'm glad they finally got around to fixing that thing.

• glad (to be / to get) rid of (something)

  I was so glad to get rid of that ugly old sofa! It was about time!

"Happy" can replace "glad" in most of these phrases.