Lil Boosie has an Instagram account, but he had never even seen Instagram. Bryan Bedder/Getty Rapper Lil Boosie, 31, spent five years in the Louisiana State Penitentiary after pleading guilty to drug charges.

But when he was released last week, the outside world was a different place.

Lil Boosie went to prison in 2009, but both Instagram and FaceTime didn't launch until 2010, making the technologies the most mind-blowing things the rapper has seen since his release.

"I was surprised when I looked on my iPhone and you could look at people and talk on the phone at the same time," he said in a recent interview. "I wasn't used to that so I was like, the world has changed!"

He added, "I ain't never seen Instagram. I heard about it, but it was a new experience seeing it in person."

But while Boosie was away, his team created an Instagram account for him, often posting flashback photos with the hashtag #FreeBoosie.

Since the first post 15 months ago, @officialboosie has amassed nearly 388,000 followers and counting.

Yesterday, Boosie took over the account.

In his first Q&A since his release, Boosie also noted that the musical landscape had changed.

"I feel like what I been hearing these last three or four days on the radio it's different from my music, and different brings greatness," the rapper says. "So I just feel I stand alone in the music industry to tell you the truth."

While behind bars, Boosie says, he wrote 1,018 songs and even "a hit for Justin Bieber."