Welcome to Techulator.com and thank you for showing interest in participating in the revenue opportunities with us.
Unfortunately, writing articles and doing product reviews require a lot of focus and attention. I am afraid it may not be suitable for you at this time, considering that you are a student and don't have access to proper infrastructure like computer. I suggest you focus on your studies. May be in future, after you are done with your studies and you get a job, you can buy a computer and spend quality time for writing articles.
Meanwhile, when you get free time, you may try to use your college computers and learn more about SEO and other technology topics, which may help you become a good author in future.
I wish you all the best with your studies.