Unless you're a massive massive history buff and/or the nerdiest mechanical engineer ever, my hearty recommendation goes toward looking, but not touching the Sint-Janshuismolen windmill. (Honestly, I think this rule that one should apply liberally to much of what one encounters throughout life.)
From afar, you'll have a lovely view of this imposing, historical monument from the days of yore, when it was actually a marvel of human ingenuity to devise such a contraption that could turn grain into flour without extreme manual labour.
If you fancy looking at its inner workings, it'll cost you a mere €2. Unless you have an undying urge to do it, don't bother. As someone who's all about supporting the efforts of others in keeping museums like this available and operating for the public, I really can't offer a compelling reason to step inside (perhaps aside from the view).
The most exhilarating aspect of this structure is the climb up the massive (and steep) stairs/ladder to the entryway, where you can view some of the history related to the windmills of Brugge. The entry fee gives you access to an extra ~100 square feet, mostly made up of wooden beams and massive gears. Save your change for some frites or ice cream instead. read more