Have you watch my wrapping your head around attributes video? This might be a good place to start: Tinderbox Training Video 05 - Getting started and wrapping your head around attributes - #6 by pmaheshwari.
REMEMBER: You can create user attributes, make them anything that you’d like. Also, the type of attribute will mater in your search. For example, if your’e searching on a list or set attribute you’d want to use “$MyList.format(”;“).icontains(”“)”. This is explained in this video: Tinderbox Training Video 14 - Searching sets: understanding the .format dot operator.