There is a Windows build available already. LyX is a LaTeX frontend, you still need to understand some notions of LaTeX. MonsterWriter is a WYSIWYM Word Proces

There is a Windows build available already. LyX is a LaTeX frontend, you still need to understand some notions of LaTeX. MonsterWriter is a WYSIWYM Word Processor, LaTeX is just used as internal tool to create PDF files. There are other exports available (e.g. HTML, Markdown, you also can publish to Ghost directly)