What happens next in this paragraph?

How to revise for your gcses
Prepare all your supplies.
The basic supplies you require may be notebooks for writing notes or a legal pad, highlighter pens and writing pens. You may also need items that are specific to particular subjects.
Choices:
(I). You will want a notebook for writing tests. Many times students are assigned large notebooks, which usually have pencil tabs and an eraser.
(II). Some supplies may be impractical to revise unless it is done with a particular purpose, such as a guarantee for your course. If you plan to make the final essay, do so about a year in advance of the deadline.
(III). Your notebook will be used in a number of ways. For example, you may need to use a highlighter pen for specific events, or underlining pens for a speech.
(IV). For example, you need a protractor, a pair of compasses and a calculator for mathematics or if you are studying a language it is best to have a translator with you (though not at the test). Also make sure you have suitable food and drink as staying full and hydrated will allow you to concentrate and work better.
(IV).