Any MMO can be daunting if you go in blind. Although Final Fantasy XIV: A Realm Reborn isn't nearly as hardcore as FFXI, it still has a few snags that newcomers can hit if you aren't careful. Since many of you will be jumping in for the first time with the PlayStation 4, I've compiled some tips to help you ease into the process.
First, understand that when creating a character, your race doesn't matter all that much. Yes, you can definitely do your research if you want to min-max and get that extra half a percentage of efficiency for your favorite class, but as a general rule the game is designed around the class system, so don't freak out when you're making your first step into the creation process.
Having said that, the game is also designed to accommodate one character -- no alternates (alts) needed. What I mean by that is one character can simply switch classes, start from level one, and go all the way up to the maximum of 50 at any time (once you've unlocked the ability in the main story). Say you're a Lancer; all you need to do to become an axe-wielding Marauder is visit the Marauder's guild in its major city, talk to the guildmaster, get your first axe, and equip it. Boom -- you've switched classes.
This encourages you to play the entire Realm Reborn experience with one main, in addition to full access to freely explore other classes and earn some select "cross-class" abilities to bring back to your other jobs. The other neat thing is that the game keeps the level of your highest class in mind, and gives you an experience bonus proportional to what level you are with your new class -- so experiment away!