Learning trades as a loner?

From my understanding it's usually only pack members that can have trades, but there is a small bit about loners being able to apply for trades.

However, that link leads to a deleted thread and I'm a bit confused as to if loners can build up to trades and specialties or not.

Loners can earn + have trades! You just have to apply for them via the maintenance if your character is a loner. If your character is a pack wolf they have to first send your required threads to your pack manager(s) to be approved.

Edit. shadow posted