Just a little more advice...if you don't mind.

Bettas will eat flaked food, but there is Betta food and it much better for him. Just a small amount, judge it this way, If you where to just put the tip of you finger in the food....what covers you tip is all the food they need. Once a day this way.

Bowl or tank if fine....if it's a tank, use a air stone, in a bowl it's not nessary. Remember Bettas in their natural state live in puddles of water. So you don't have to get a large tank if you don't want too. Just nothing less then 1 or 2 gal. though.

Stay away for the live plant, if your not sure what is a good plant.

Make sure your PH is not high or low. A good Ph for a Betta is 7.0....a little off is ok. But stay close to that.

If you do want to get him a buddy....don't get another Betta...one will die from the fighting. Reason for their name. They can live with other fish though....mine always have. A good fish is like a neon, guppy (plain tailed), terta. but even then watch them, make sure the other fish have a hiding place to go to if nessary.
Never get a fish with a fancy tail/fins!!!

Never put a Betta with a goldfish, they put off to much acid in their wast.

Also, just in case you don't know. Male Betta's will make a bubble nest at the top of the water sometimes. So If you see a part of your tank/bowl with a group of bubbles floting on top that doesn't mean your water gone bad or anything else you might think. It just means he getting ready for the hope of a female coming along and perparing for babies. If you wanted to this would be the time to get a female...ONLY for mating reasons. Once the mating is over the female has to be removed and the male will care for the eggs. Then of course once the babies are born they have to be seperated. So really not worth it, inless you want to have a LOT of Betta bowls around.