Here's my problems with the show....
Have we yet heard how this zombie outbreak started? Maybe I missed the explanation.
Rick wakes up, get the all the information about what's going on, and then heads to Atlanta to find his family. He obviously gets stuck in the Abrams and Glenn has to save his life through the radio. Maybe the Abram's is out of fuel or something. It also is probably not some simple thing to operate, but why doesn't he try to use it to crush zombies? Seems like an easy enough solution to his problems. Maybe they can get away with it by using those two possibilities(lack of fuel and or doesn't know how it operates).
My next issue:
Rick leaves his bag of guns on the street when fleeing the zombies... Rick and company want to retrieve these guns yet there is a Ma Deuce nearby that is fully functional and has ammo. Also there are likely other military weapons found around that site and even around the CDC building. What sense does it make to want the bag of weapons he grabbed from the police station? That's not even mentioning how Rick and Glen covered themselves in zombie meat and blood to walk through hordes of zombies on the street? Why not do the same thing and collect weapons?
Why doesn't the group as a whole build a compound in which they are not only safe, but can gather medicine, food, and weapons? They obviously would build such a place where they could find a clean well or two. Not necessarily on Hershel's property. Why did it take them so long to start training some of these people? Personally, I would have built this army sooner and went out into zombie hunting parties. Just my take.
Like any show, I get that you aren't always going to get a logical solution to problems that may come up. I just think this show goes too far in the opposite of logic. Seriously, look at what they and then consider yourself in their shoes. What would you do? This is the main reason that this show to me is becoming bland.