I enjoyed Cederwolf's reply.  I have some experience as a technical writer and now prepare the digital assets for a company that makes online technical training packages for aircraft maintenance.  I've been woefully disapointed by the state of tutorials for Poser.  Some of them are downright crap.  A person may be a great modeller but that doesn't qualify them as an instructor.   

If you're going to charge for them, and you should if the material is in demand, please spend a few bucks and have your completed tutorial assessed by a technical writer or training company.