Corrected entry: Rick gets shot in the high left shoulder/chest. He wakes up in the hospital with a gun shot wound to his side.
Corrected entry: Rick wakes from his coma with a perfectly trimmed beard. Clearly the hospital had been abandoned for a while, so no-one to trim it. (00:15:00)
Correction: Robert Kirkman has stated that Rick was in his coma for 4-5 weeks, so around 35 days. In the short series "The Walking Dead: Webisodes" the one titled "The Oath" shows that a doctor named Gale Macones stayed after the outbreak, to care for patients still in the hospital. (Including Rick) IV bags last 24 hours, and you can only go without water for 4-5ish days. Meaning she left very close to when Rick woke up, which explains why his beard was in good shape.
You can go longer than 4 days. And even if she left 4 days earlier he wouldn't be clean-shaven.
Corrected entry: After Rick falls off the horse in the city center, he drops the gun duffel bag close to him near him at the rear of the tank. In the closing scene, the last five seconds, there is an overview of the street and the tank. But the black duffel bag cannot be seen.
Correction: The black duffel can be seen at the rear of the tank. It is partially blocked by a walker getting to the horde where the horse is being eaten.
Corrected entry: In the beginning when the guy comes out of a coma and he sees the door with the writing inside, then the zombies put their fingers through. In the next shot the cop goes through the double doors and the fingers are nowhere to be seen.
Correction: Different door. Different scene. After Rick sees the hand come out the door, he backs away. He then treks through a dark stairwell to reach the door he uses to exit the hospital.
Corrected entry: The bullet that wounds Rick Grimes hits him in the top left part of his body (one just clips the vest), but later his wound is located on his belly. (00:12:30 - 00:14:25)
Correction: He gets shot once in the arm but again in the stomach. The wound that led to the hospital was in his back, out through the abdomen.
When he was shot in the stomach the bullet hit his vest so he wouldn't have been injured from it.
I think he meant that the bullet that went though his back shoulder area went through and out his side.
Correction: He gets hit twice.