I’ve been writing for many years. I learned to write in a time when we were taught that when you are building a list of things, you always put a comma before the word ‘and’. I am a big fan of this practice. If i say ‘I like oranges, limes, and sometimes apples’ I will put that extra comma before the word ‘and’ That is the Oxford Comma. I like it and it likes me.
I love the Oxford Comma
I am also a fan of other things. Like double spaces after a period.