Monday (Nov. 16) was a big day for Neil Patrick Harris. In addition to a very Barney Stinson-centric episode of “How I Met Your Mother,” featuring the debut of the sure-to-be-legendary Lorenzo von Matterhorn, NPH finally joined the ranks of Twitter.

No doubt that Harris will take to the social media platform like a duck to water. His account — @ActuallyNPH — was quickly verified as the real deal, and thanks to a shout-out by “Dr. Horrible’s Sing–Along Blog” co-star, and Twitter aficionado Felicia Day, he rapidly picked up followers, surpassing 44,000 after only seven hours.

His first three Tweets were the usual “how do you work this crazy contraption?” variety:

My first tweet, peeps. I apologize in advance for my slow learning curve. Nice to (sort of) meet you. It’s amazing how quickly 140 charac

Felicia Day is popular. She mentions me and Twitter and Kablammo! http://yfrog.com/15aklrj

Holy Pete, so many responses! Thanks, gang! I’m still trying to figure out which button does what..! And this 140 character limit is craz

We expect he will work his way up to Twitter haiku by this weekend.