'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease
If you click on More on the top of this site's home page, a list will drop down. You click on help topics. That will give you all guidance required for this site.
As a new member you start with forums. Read the forums and start giving your responses and ideas. You can open your new threads also. Then start responding to expert answers in the Ask Expert section. Then you can go with article reading and expressing your ideas on the articles. You can also publish your articles. If you are interested you can post new jobs posted in various places giving the source in jobs section.
Your doubts you can get clarified through forum posting
In forum you can respond to others threads and share your thoughts, and also you can start new thread on any topic and can discuss all members. And also if you have any queries or problem or doubt regarding ISC, you can post it in forum. So that editors or members will clarifies your doubt.
In article section, you can write article on any topic of your interest. As you have completed B.Tech, you can write articles related to your subjects. But make sure that your articles are not copywritted other wise editors will reject your articles. Go through help topics first and then start writting articles.
And in job section you can post job vacancies. So contribute in the sections of your interest. But make sure you write quality content. All the best.