To answer your question Nicehash pays out daily if you meet the minimum payout amount, or they also do a forced weekly with a lower payout amount. The problem with the forced weekly payout is you are subject to a 4% withdrawal fee.

While Nicehash may be ok for real beginners, once you been mining for more than a few days I would seriously consider moving to a real pool with reasonable fees. There are many to choose from, and then learn to transfer your funds to an exchange to convert to BTC yourself. You can even use an exchange wallet address to point your miners at on many pools, so one less step for you. You will end up saving in fees and have more control over your coins so that you can convert them at the most profitable some, and not randomly. Sure, it is more work but then again you learn a lot more about how to entire ecosystem works.

Also, before blindly taking advice from these "Nicehash supporters" take a look at some of their post histories. User yerfei for example, almost every post he has made recently is in reply to similar threads where is one line answer is "You can start with NiceHash or Winminer", along with a link. Who's to say he is not an representative from Nicehash/Winminer promoting their product? It doesn't take much to make an account on this forum and level it up, so you need to research more than just the pools when relying on information found on here.