You can currently download the client here (took me about 15 minutes) and create your character now (which includes reserving a character name). There are still a lot of hairs, eyes, and tattoos to pick from, but if you had your heart set on one that isn't in there yet, you'll be able to change it in stores within the game later.
There will only be one server so you don't need to worry about that for now. (Server uses the same icon as Scania from Maple 1, LF>BelloNova.)
Aside from creating a character and adjusting the ingame options, you cannot actually login to your character until July 7th, 2015.
Keep in mind you need a Nexon KR account to do this. There are legal and illegal ways to get them, so you can go research how to get one on your own if you don't have one yet because I won't be posting how here.
Here is my character:
[Image: http://ft.trillian.im/d8946682d6c7da7bef24121282783a3ada1b2a88/6yWSeK36OXndDkQBo8qZ6cY6RW6Z0.jpg]
Yes that mustache is actually a scar. XD
If you're going to play, feel free to discuss which class you'd pick and what name you'll use if you already made yours. I'm still undecided on class.