Question about buying snowboards???

You'll figure out which board will suit you best once you've snowboarded some more as your snowboarding style will dictate your board. Park board generally are slimmer at the waist so for larger feet, you'll notice your toes and heels dragging at times. Wide boards will suit you for general use but will not turn as quick in the parks. Again, it will come down to feet size, weight, riding style and personal preference. If you can find a demo day, try some out (once you've gotten a bit better) and you'll know quite quickly which one you prefer.