Introduction - If you have any usage issues, please Google them yourself
What follows is very much a personal view based on my
own experience and reflecting my personality, the type
of mathematics that I work on, and my style of work.
However, mathematicians vary widely in all these characteristics
and you should follow your own instinct.
You may learn from others but interpret what you learn
in your own way. Originality comes by breaking away,
in some respects, from the practice of the past.