Many of the Foci give free skill training.
Trick or Treats (p210: Worlds Numberless and Strange)
Tier 1: Treat Seeker. You are trained in tasks related to searching and hiding. Enabler. ....
Tier 2: Trick Artist. You are trained in lockpicking and tinkering with devices. Enabler...
Many Descriptors give Skill Training. All character types give skill training. Some Recussion traits give skill training to everyone who is in them
And of course you can take training in a skill by spend XP (indeed you have to, to up-tier).
What happens when these overlap?
I assume the first instance you become Specialized?
What about in the third instance, or if you are already specialized?