Howdy phiz,
When you get the game can hop on Thursdays or over weekend to join in the more casual missions.
That should get you more familiar with A3 and our game style until you finish the DGL.
The candidate role is given when you take part and pass selection, from there you do the indoctrine and first training intro into how we operate, and once you have undergone basic training and have a couple missions under your belt you get ranked to Private.
As a former Battlefield veteran, I can vouch there is no backing to it once you play this 😀