1. There were a whole lot of comic similarities
The community of Alexandria is a big setting in the comics, and last night we met many of the TV equivalents to many characters familiar to comic book readers. Take a look:
Deanna Monroe and Douglas Monroe
In the comic series, the leader of Alexandria is Douglas Monroe, an Ohio Congressman. However, it seems like the writers have opted to change the leader from Douglas to Deanna. Deanna has already asserted herself as a strong and very switched on leader, telling Rick that she can read people well, and even thanking Glenn for knocking her son, Aidan, on his ass.
Jessie
The TV version of Jessie was played by Alexandra Breckenridge, and looked quite different to her comic counterpart. In the comic series, when we meet Jessie she is married to Pete, the community's doctor, and the mother of Ron. Already on the show the writers have given TV show Jessie an extra son, Sam, as well as a love of owls. In addition to all of this, I couldn't help but feel like we might see more and more of Jessie as the episodes go on, and if the comic series is anything to go by then she will be close to the center of a rather big storyline soon enough.
Ron
Another character we got to meet in this episode was Peter and Jessie's son, Ron. He lives in Alexandria with his mom, dad, and younger brother, Sam. In the comic series, Ron played a pivotal role in a storyline involving Rick and Ron's father, Pete, the community's doctor, soon after Rick and the gang arrived in town.
Olivia
In the TV series we met Olivia as she took the group's weapons from them. In the comic series Olivia is in charge of the weapons storage. She's a very helpful and pleasant member of the community in Alexandria, and introducing her early on in the episode suggests we'll definitely be seeing her again soon.
There was also a pretty direct quote from the comic series, when right at the end of the episode, Rick, flanked by Carol and Daryl in a very powerful shot, uttered this fantastic line:
We'll make it work, and if they can't make it, then we'll just take this place.