I don't think there is any racism or insecurity involved. We are in this together. So lets not argue. Lets work together. We are all anxious and it is understandable, but doing a bit of research will go a long way, not only here but also ahead in life. All our questions have been answered here before in this thread itself.
After reading this thread and others, it seems the cadet selection process is a long one. Once shortlisted, SIA will contact you. Two interview rounds are held. 1st round comprises of basic questions depending on the interviewers and your educational background.
Second round is held over two days with group exercises, psychometry tests and it ends with a tea party wherein the candidates are still being rated. Successful candidates are sent for medicals. If selected SIA will inform you about which batch you will join and the fleet you are headed to. And yes SIA sponsors the training Avesh.
Hope this helps.