When I first started watching "Gotham", I didn't yet have Hulu+ or cable but we still had some digital channels so I was able to at least pick up Fox. I'd look for it on the replay as well (As sometimes it'd come back on a Friday or Saturday night) so if I didn't get to watch it on Monday night I'd be safe later on. It's just one of those things I don't think about as much now since I have Hulu+ because now I just watch the episodes after they air without a problem. Hulu+ really does make television watching much easier and is a lot less expensive than cable.
The show centers around a young Bruce Wayne- as he is still a child- and the life of police officer Jim Gordon who you might recognize from the DC Universe otherwise. I particularly remember him from "Batman: The Animated Series", but that is where I pull most of my Batman knowledge from anyway. In a lot of ways, "Gotham" is a lot like "Arrow" in the sense that you find these characters and say "Who is this going to be?" or you kind of know what's going to happen based upon comic book lore.
A good example of this is that towards the end of the season there were teaser images up of one of the main characters dying. Well, you could look over that list and know certain characters such as The Penguin wouldn't be dying because he doesn't even look remotely like Danny Devito yet. So as Fish Mooney took her last breath (probably) in the season finale, it wasn't all the surprising because she likely won't come around later on in the regular world of Batman.
Thus far, we have seen The Riddler, Penguin, Catwoman, Scarecrow and Poison Ivy in terms of villains we know about. This still leaves a lot left to make their presence throughout the upcoming episodes and seasons, most noted of them is The Joker who some are still debating whether or not we've seen. And that is the fun part about this show: trying to link it from the past to the future, from what is not yet known to what is known in the future. At the end of the season, Jim Gordon's former girlfriend Barbara seems to take a turn for the villain side and why not, she can come and go before Bruce Wayne is ever even Batman.
In some ways, knowing what we know about Batman serves as its own spoilers. Bruce Wayne isn't going to die. Jim Gordon isn't going to die. Though most shows aren't going to kill off their main character anyway (Again, see: "Arrow") so it's not so much a spoiler as it is common sense. It just strikes me as odd when you look at the history of Jim Gordon and how his daughter, who is named Barbara, becomes Batgirl and then Oracle, and yet Jim Gordon is married to his boss at the time, a character who has had some development thus far but not really a whole lot.
DC was boasting four television series on at the same time with this, "Flash", "Arrow" and "Constantine" and though the last one of them got cancelled, "Super Girl" is coming in the fall and I'm hoping that they can all stick around for a while. (I liked "Constantine" but it was in a bad time slot and perhaps even took dark for NBC. Netflix would be wise to pick it up) Eventually, you know that "Gotham" has to end because Bruce Wayne will become old enough to where it is no longer a backstory and he just catches up with Ben Affleck in the movies.
Until that time comes though, "Gotham" is one of my favorite shows (at one time, it was one of the only shows currently on television I was watching in "real time" and not waiting to see it on either DVD or Netflix) and perhaps next season I will do a review after each episode.