LPT: ChatGPT is incredible for generating and evaluating regex
I have to use a ton of regex in my new job (plz save me), and I use ChatGPT for all of it. My job would be 10x harder if it wasn't for ChatGPT. It provides extremely detailed examples and warns you of situations where the regex may not perform as expected. Seriously, try it out.
Typically called JQL, it's a simple query language to find info. For example, there's a simple query to find epics with a particular affects version and/or fix version, or return epics that are missing information in a particular field.
The default or basic Jira can't do some things though. Like I haven't been able to get the total number of story points from issues within an epic. I think you need a 3rd party plugin for that.