Hi,
I would first check with the dealer's website, then the closest dealer. You may have to schedule a time with the dealer and take a full day to travel there, have some training time and return home. You might be able to get a good friend to do the driving. If they're not interested in sewing, then maybe they could go shopping, etc. in the area while you have your training.
Ask the dealer if they have any training books or videos about how the attachments are used.
I believe that Nancy of Nancy's Notions has a good book about all of the different feet and how to use them. This may or may not be of benefit.
As for some features, I think you just need to get out some scrap fabric and start playing around with different features. This of course is not the total answer to completely learning about your machine. I would advise doing this though before paying for training. You want to already be a little but familiar with your machine.
I would check out if there are any groups at yahoo for Pfaff. If it is an embroidery machine, search out some of those groups. There may be others in some of those groups who have your machine which can pm emails or may perhaps be in your area and willing to help you learn.
I would also check out any videos on You Tube. There are a ton of videos about any kind of subject you can think of and you may be surprised what you find.
I would search out any and all quilting guilds in your area. Speak with the president or public relations person in each group and explain your situation. You may be able to find someone in a quild willing to assist you in learning about your machine. If you do find someone I would think about joining the quild for a period.
I have belonged to a local guild for several years now. I'm not in a position now to get to many meetings but I do still support the quild.
I would also put a posting at craigslist for private lessons. You may find someone willing to come to your home to help you learn.
These are just a few of the thoughts that came to mind when I read your posting. Good luck with learning all about your machine. Please keep us posted as to your learning process and what you found worked the best for you.
Have a Great Quilty Day!
Pam M