Hmm....sounds like you need to spend some time on good ol' google. Head over there and search 'Betta Breeding' and literally read EVERYTHING you can find. That should answer most, if not all, of your questions.
I could go into a whole thing about what you need to do, but really all you need is proper research. I recommend slowing things down, just enjoying the company of your bettas for now, and taking at least a few weeks to read up on as much info as possible. Breeding is no walk in the park, you want to research until you can't anymore.....then research again the next day
There is no such thing as too much research when preparing to breed.
And something to thing about before you put all your time and effort into this....
Are you prepared to house, feed, care for, and find homes for possibly 200+ fry? Or are you prepared to cull fry that you can't care/find homes for?