You should not think that you are clever enough to know everything (though you are definitely clever) and you do not need any coursework data. Coursework data is always of great help for a coursework writer, since it helps him or her expand knowledge on a problem.
You should be very attentive when collecting your coursework data. This means that once you have chosen a topic for your coursework and you are to collect coursework data, make all the necessary notes in order not to be accused of plagiarism (what we mean here is proper citing). Thus, at this point, the significance of collecting coursework data becomes quite clear.
More than that, you should distribute all the collected coursework data in accordance with the points of your coursework outline; otherwise, it will be difficult afterwards to pull all gathered coursework data together.
We gradually come to the significance of your coursework outline. This part of your coursework writing is very essential, since it organizes your work and brings clarity to the narration. You should also keep in mind that a proper coursework outline will help you not to deviate from the subject of your coursework.
The process of collecting coursework data is a very time-consuming and tiresome task, due to the fact that you should read a lot. Besides, you are also expected to write a lot. Hopefully, the last problem is solved nowadays, since there is a great amount of Xerox machines and a present-day student does not face the difficulties concerning the actual process of putting down coursework data.
As far as you have understood, the significance of gathering coursework data cannot be measured and evaluated. Without sufficient and reliable coursework data you will not be able to write a good coursework. To write a coursework, you need some additional information on the chosen topic, which will help you cope with this task.