>How often is too often to open the hive?
When you're learning you need to balance what you need to do to learn with what's best for the bees. You'll get more honey if you leave them alone and you'll learn more if you take peek now and then. I'd enjoy learning.
> Do I have to smoke the bees every time?
You don't ever have to. But a puff of smoke does wonders and upsets them less than a defensive alarm.
> Because if I could, I like to open if Twice a week.
Go ahead. Better yet get an observation hive and watch them every night:
http://www.bushfarms.com/beesobservationhives.htm