Disclaimer: If you are seeking medical advice on your fish, please visit a website like fishlore.com I truly would love to help out both you, and your betta, but the forum rules do prohibit it so... Yeah.
Alright, so I've become tired of having to explain to people (on other websites) that they're taking awful care of their fish, so I've just decided to post a care guide on this website, seen as it has so many members (More people = More readers).
Now I'll be discussing...
Tank size
Decorations
Aquascaping
Cycling (The nitrogen cycle)
Acclimation
Stocking
Divided Tanks
Betta sororities
Breeding
Common mistakes
Betta myths