Understand plagiarism (Task 10)

I understand that plagiarism is to copy some one word to be your own. This task help me to know more about plagiarism a lot more. Actually plagiarism is not only the word that you have taken to be your own but it also include the idea, data and image. I did't know this before and when I did the exercise which is to choose which writing is plagiarism I did most of them wrong.
In my openion it is very hard to avoid plagiarism because if you take an idea from someone it is also considered plagiarism. When we study we take an idea from the book and some data as well. The Library Suvice 'Understanding Plagiarism' Tutorial suggested the way to aviod plagiarism is to give source's reference and put the quatation mark for the sentense that had taken.
It is very useful to learn this. After this I will have take the reference every time when I take note from books, journals or webside. Also, every time when writing I have to understand the source and write in my own words.