8 hours ago, Tonbo Karasu said:
Can I choose to use a skill I have no levels in to get the other benefits of using that skill? Ie make a Courtesy roll with just my ring dice for the approach so that the TN is reduced by 1?
Yes. A skill check remains a skill check even if your skill rank is 0. So you still have access to techniques that specify "when you make a <skill> check", like kata, get particular generic opportunities, TN changes and so on.
The only consequence of a zero skill rank is not getting to roll any white dice.