Writing–I’ll only write when I’m in a good mood, or i’ll spoil everything. Let the story flow naturally, don’t add too many unecessary descriptive words, don’t force scenes into your book. Ask yourself: What would you do if you were in such a situation? What would your character, based on his/her personality, do?

Revising–get your friends, family to read through it, correct your thing. Also, watch your grammar, vocab, punctuation, and other stuff. Also, read through your story. You find it interesting? What about other people’s opinions? Do they like it?

If they do, well, see if you can add more things, subtract unecessary things, and polish it some more. Then, there’s your book. Send it to a publisher. Try your luck.

That’s pretty much it.
Hope I helped.

EDIT

Also, how to publish? Which publisher? How to get ideas? How to write properly? How to let words flow? How to make sure your story is likable? etc. But one man’s meat is another man’s poison, so some people’ll like your stories, others will dislike it.

How to write a good mystery story? How do you make your story thrilling? How to write? Revise? Plan? How do you usually do it?