Soldato
How would one get into PUGs and what would I need to have unlocked ~ Pathfinder/Capper/Chaser wise?
PUGs occur most nights on the spinfusor mumble server. You need to decide on which position you prefer to play, I.e., Light/Medium/Heavy Offense / Defense or specialist: Sniper, Chaser or Capper. If you're new I would stick with Light/Medium Offense/Defense of which the Soldier, Raider and/or Infiltrator are prefered. The loadout will depend on specifically which role you want to play.
I think there is a video on how to play CTF which explains the roles.