Preparation for TOEFL test
Since I have a TOEFL test to do in English, I thought I could prepare for it by writing notebook entries. I feel that my writing skills are not so bad, but I need to be able to argument in a more profound way. I came to the conclusion that actively practicing my writing skills will help me with passive skills like understanding as well, because I will get more into the right setting and mindset if I practice writing.
Please tell me your tricks. How do you prepare for an advanced language test? How can you learn when you are at a high level already? What materials are most interesting and where do you get them from.
I will be very happy, if you would suggest me topics that I can discuss in an essayish form, which is I guess what is expected from me in the test.