Hello here are some tips with the others.
Decor -only silk or real plants as plastic can rip their fins. Any house etc make sure big enough for them to get in and out and also no sharp edges to entrances, etc. Have some taller decs for the betta to rest on as they are air breathers and most like to be lazy!
Food - bloodworm are good treats, peas are good to feed once a week to help with constipation, main staple should be betta pellets such as biogold.
Temperature - between 78-80F
Filter and tank - really will need to cycle before getting the fish, it is safer and shorter than a fish in cycle, no fish suffer and you wont have to do backbreaking labour of daily water changes to stop fish from dying. Here is beginners resource center with many links!
http
/www.fishforums.net/index.php?showtopic=277264
here is a link to find someone local for media donation to kick start your cycle. If it is a small filter compared to where you get mature media from you may be able to clone and "instant" cycle
Be prepared for your new betta to sulk for the first couple of days (you may get lucky) so dont worry too much about not eating, just keep trying as they will give in eventually.
As to names, let us see him and we can suggest things! Sometimes you will find one on the personality of the betta!
Lastly they are known jumpers, please have a lid for the tank!