The only advice that’s worth a damn when it comes to writing is to sit down and write. There are no quick fixes, no cheat sheets, no words that will bring around some grand epiphany. Good writing is earned from experience. It comes gradually through practice.
Asking “how to write?” and “where do ideas come from?” are the wrong questions. Only someone who doesn’t write would think these questions important–like quizzing a surgeon how he knows where best to make the incision. A writer can give advice on technique, discipline, and what to read. Books teach how good writing works.