Rosie,
Did you learn a particular subject or concept just by reading a few articles?? Reading a few articles written by Steve wont help you master SR. You have to read more and practice/experience it. Go through this thread
SR and Responsibility
I also posted a few books, which if read will help you understand SR.
As for your questions -
There is only one consciousness and that is YOU (capital letters). The you(small letters for the physical body) is not the real you but a manifestation of your consciousness.
After your death the knower of you dies but your consciousness continues to exist because your consciousness was never born and never died.
You dont know what other people think. Everybody has their own reality but all of that exists only in YOUR consciousness.
This is my 2 cents.....