Ok

My phone restarted once while I was trying to write 'phone spoil' the first time. Now I am back on laptop and will continue writing once ready.

Returning at 2 am tomorrow, so I may not be able to answer many questions, especially if my phone goes down yet again (currently it's back to normal but I am expecting it to spoil again).

You can continue to post questions first, so that other tutors can post the answers or I can post in the event that I can find some spare time to write up some answers.

Ok. I post qns ready