TOPIC: How to deepen into ECO tasks

Hello everyone,
I'd like to know how to go deeply in understading the tasks on the ECO in which I have failed on the tests. To be more clear, if I analyze my wrong answers and I discover that I fail most of the time in the task "Manage conflict" where shoud I go to deeply understard the concepts regarding this topic? Should I go through all books and search for it?
Thank you for your answers.

Hi Rosanna. If you are using the PM Exam Simulator, the detailed explanations give you references. You can use those to signpost the most relevant sections of your books.

Hi Elizabeth, thank you for your answer. Of course I'm using the simulator, thats why I asked the question. Every ECO task covers a wide range of topics and to review them it means review all chapter/argument related to it and it means losing time, from my point of view.
Anyway I'll find a solution that could work.
Thanks again.