I wouldn't at all mate unless your 100% dedicated,i know someone who breds betta's...takes so much time and effort, sometimes he talks of packing it in,
I have bred a few species of fish, and unless your hearts 100% into fish keeping it will put you off, so id reccomend, firstly keeping fish safely and enjoying them, then if your still into fish, buy that time you will have found what sort of fish your really into. for example my preferences are channa<snakeheads> south and central american fish esp cichlids and predatory carachins...