Can you recommend any reading on HCI?

In my own experience defining and prioritizing system functionality requirements, it helps if I’m able to really immerse myself into the job-to-be-done, and develop a view of user requirements first hand. Having enough technical knowledge to understand what is possible, combined with knowing how users really want and need to use the tool, has lead my projects to success.

I’d be interested to learn more ways to become more effective at this — sounds like you might be able to make some recommendations.