IMPORTANT! If this is your first time watching, then it's strongly recommended you watch this series in Release Order for best enjoyment, this is because the author planned the story out of order, and watching chronologically spoils some parts, while not knowing what happened before creates a more interesting story.
Monogatari Series (Bakemonogatari) Watch Order (This is the Recommended Order)
If you already watched the whole series, then it's ok to 'rewatch' in chronological order so you can understand it better, or just get a different experience:
This includes all different instances & spin-offs of the series.
Not exactly a Watching Guide per se, but a guide to animes with Great Art!
The release order is recommended for a First Watch.
On a different note, if you enjoy the show and feel like re-watching in chronological order to understand the messages better, here is the recommended order based on this post: 10, 7-8, 5-6, 1-2, 9, 3-4, 11-12
Note that the first story and probably the best of them all is actually the last 3 episodes of Ayakashi - Japanese Classic Horror (Bake Neko Story), which is the best part of that anime to such extent, that spawn this standalone series. So you should probably start there.
This show is also featured on this list: Animes with Incredible Art
This anime suffers from an identity crisis, for starters, the mafia here is portrayed more like 'Justice League of Superheroes' rather than an actual mafia. Then at the beginning of the series starts up with the ridiculous slice of life episodes that quickly get extremely monotonous and boring, but somehow necessary to watch in order to introduce all characters, which in this anime are a lot. Finally, after 70+ episodes, it changes into a glorious shonen anime, full of action that won't stop until the end. This last part is usually what receives the best ratings. Ironically, even filler arcs at the end of the action pack parts turn out better than the cannon life episodes!
I strongly recommend you to skip the 'Life' episodes for a better experience:
This is what I recommend from the whole series and I recommend you watch in Release Order:
But if you want to see the whole franchise you can follow this list: