The first screen you'll see when you connect to Materia Magica will be something like this (screen shots taken using the Moongate Client):
The name of your character is important - you're going to have it for a long time, so please consider it carefully. You should use a name that fits into the medieval-like theme of the game. Or you can make use of the automatically-generated names - once you type NEW, you will be asked if you wish to view a list of automatically-generated names for your character. Pick from one of those or make up a name of your own.
Password and Security Question
Once you've selected the name for your character, you'll be asked to enter a password. Your password should be from 5 to 25 characters long, cannot contain your character name, and must contain at least one number. For security reasons, text echoing will be turned off so you may briefly not be able to see what you are typing in. You'll need to enter your password twice in order to confirm it. It is a good idea to use a unique password that only you will know. It should not be a password you have used elsewhere.
You will need to pick a security question (also known as a challenge question) and enter an answer for your character. The answer to the security question should be something only you would know, and should be at least three characters long. We'll also need to know your real name and email address. We won't be adding your name or email address to any annoying email or spam lists, and this information will not be made available publicly, either in-game or on the website. This information will be used for account validation and to verify your identity in the event you forget your password and need it reset.
The next step in the character creation process is to pick the gender, race, and class of your character. Before you can do that, however, you should know more about the attributes and vital statistics that will make up your character.