CAE writing "Information sheet", grammar correction

I write here my writing exercise. It's about information at the university.

"Introduction": Do you want to manage your time in the better way? This guide provide you with some advice to organize your time at the university.

"Managing your time": You can make a useful plan of study according to your commitments and lessons. It would be easier studying in this way.
The most popular method used among students is a computer table in which they organize their study's hours number according to the difficulty level of subjects. The more difficult it is, the more time it's needed. The method is certainly not as bad as many students say, you can try yourself and then you may modify it according to your needs. It will certainly be useful to get very good marks!

"How to read difficult books": You are certainly going to read some difficult books during your academic career. It's necessary understand very well the most important parts of the text. You can make a list of the main point of the text, and after you've studied all the text you focus on the main points.
During free time, as often as possible, you may exercise yourself on other difficult texts or newspapers.

"Remembering information": To survive at university you had to remember a lot of information. You can use a digital agenda on your smartphone or write information on an apposite exercise book.

Could you correct my awful english grammar? Thank you very much! Frederick.