Once you have created your character and chosen your galaxy, you will receive a transmission from your class leader. From there Megan, your computerized personal assistant, will help you with your training mission. Below is a list of the different new player guides for each class, in order to help you get through your first missions:

Terran Tradesman
Terran Enforcer
Jenquai Explorer
Jenquai Defender
Progen Warrior
Progen Sentinel