He kicked things off by blessing everyone from his heart (#teambreezy):
Dear friends, I am pleased to get in touch with you through Twitter. Thank you for your generous response. I bless all of you from my heart.
— Benedict XVI (@Pontifex) December 12, 2012
And then opened the floor to his first weekly Ask Me Anything-style live questioning session, in which will accept questions about pope-ish things from the 500 million professional comedians who make up Twitter's user base.
Questions can be submitted to the Pope using the hashtag #askpontifex. Many people have already written in asking some variation of "S'up dawg," which is hilarious and probably when the Pope saw it he was like "'S'up?' Pardon me, what does ‘s'up' mean?" haha oh my God, they got him haha so great #legend.
On the subject of faith and building materials, @pontifex said "God is the solid rock upon which we build our lives and his love is always faithful." He also gave people some ideas of fun things to do with Jesus (speak to him in prayer, listen to what he tells you in the gospels, look for him in those in need, plan a homemade picnic for a fun, low-key date, etc.).