Hey I recently experienced this, here I go:
1. Airline will provide you with the Arrival form. Fill it and keep that form with your Travel document.
2. Once you are out of the plane just follow the instructions and move towards Baggage Claim.
3. In between you will find a queue saying Visitors, Residents. Just go n join the queue of Visitors.
4. Wait for your turn.
5. First IMO will greet you and will take your PP and arrival form.
6. He can ask you questions like " From where are you coming from", "Purpose of your Visit", "Duration of course", "Institute".
7. He will stamp your PP ,will return you the Arrival form and directs you to the place from where you will be getting your permit.
8. Once again queue, a common one.
9. Wait for your turn.
10. Second IMO will ask for your LOI, LOA, Travel doc, etc.
11. Will ask you some general questions regarding your stay, your course duration, how will you b paying the fees. Etc.
12. Will print your SP and staple to your PP.
13. You got what you want, now its time to leave.
14. Collect your baggage and move out.
15. While going out you have to submit the Arrival form.
Hope it helps!
Regards
Abhi