It really depends on how your board owner configures it. Jira can do nearly nothing or it can have an immense amount of restrictions and automation and notifications. It's up to the board owner how much it helps you work vs how much it gets in the way of your work. If there's something you think you'd like it to do, find your jira admin or expert and ask them....it probably can, if the admin knows how to make it.

The only thing I can guarantee with Jira is that the moment you get used to a workflow or a process, someone, including and especially atlasian, will change it. Then you get to learn it all over again. So look forward to that.