Yeah best bet is to just learn now rather then later, rolling machines arnt the best idea for blunts you will get a much nicer smoke if you take your time and learn, plus don't think any one makes blunt rollers. Plus this is the wrong place to post this. :<
Well if you didn't like those answers, you could always just go to your local head shop and I'm sure they sell blunt rollers or at least king size cigarette rollers. Just call em up and ask about it. If that doesn't work out just google "blunt rolling machine" and you will find plenty of results.