I ended up having to mix multiple breeder's ways to get mine to successfully breed.. my way isn't the conventional way, but it works for me with great success. So definitely research, look around and find what works best for you and your fish.
Preparedness, patience and conditioning are the top three things needed when it comes to breeding.. without all three you won't be successful.
Prepare - make sure you have all the food you will need in advance, otherwise it will be a mad rush to locate the food you need within a day or two before you need to start feeding the fry. So get everything ready - if you're doing cultures, get them in and divide them up so you have a few growing, and back up in case one crashes. Make sure you have all your equipment, again, don't want to be having to rush for something at the last minute because it was forgotten.. been there, done that and it's not fun.
Patience is the key - some people get lucky and get a spawn right away, others it takes weeks or even months to get a successful spawn. Working with different fish will also come into play.. virgins may need a bit more time to learn what to do properly.. males may need to practice wrapping, or will eat their eggs at first because they don't know any better. So don't expect a spawn right away, or even with the one pair - it may take multiple females/males to get a pair who connect well and who want to breed.
Condition - one of the biggest lessons I had learned.. make sure you condition properly and good. Make sure the female is ready to pop with eggs before releasing, especially if she is a virgin. It may still take them a while (one of my females who was a virgin took a week to breed and she was so huge the whole time), but they are more likely to continue to flirt and attempt and be interested for the time it takes if she is full of eggs. Feed well and feed often during conditioning. Keep them separated from one another's view (and of other bettas) during that time.. give them a 10-20 minute viewing session a day and then back to being alone. I've tried having them view 24/7 and carding them (keeping them out of view), and the most success I've had were with the ones who were carded and unable to see another betta 99% of the time.
Bettas who are not ready to breed, who weren't conditioned properly, may end up hurting each other rather than breeding.. it's a risk placing two together when they aren't ready.
Those are my tips for the most part.. I can sit here and tell you it's going to cost lots of money (grow out tanks, jars/cups, heaters for all, water/electric bill, etc), can tell you breeding VTs it will be a bit more difficult to get rid of (not many people willing to spend $35 on shipping for a $3 fish they can get at any LFS).. yes, there are new fancy VTs out there, but the common ones such as yours pretty much go for only a couple dollars at the most, and pennies (if that even) at a LFS. So be prepared that this is a good way to learn about breeding and learn about raising fry - but if you are looking to sell you may want to look into other breeds as well just to bring in some money to help pay for all the food, etc you will be purchasing frequently. But by all means, breed what you wish as this is something you do for enjoyment more than anything else.. but keep your options open.