Whew! Relieved to hear it. After reading your message, I thought to my self "oh no, there goes another one; I had better say something."
You've hit on the challenge of locating a benevolent 'apprenticeship' in the business. Retail business owners expect to recover the expense of training employees, normally through the benefits that their employment brings the business -- or, in case that trainee intends to leave soon thereafter and start a new business, by developing some kind of commercial relationship with the prospect (selling him stuff). There's not much motivation to spend the time and resources on training some outside party for free when you've got a business to run.
Unfortunately, businesses I've seen that are willing to train those whose primary motivation is not for employment (sometimes just to have another body behind the bar for a couple of weeks) are probably not the role models that you want to emulate.
While you move toward the launch of your business, continue to immerse yourself in the culture of the industry. There is probably not much benefit to attending a formal training class at this stage anyway; reserve your funds to attend informal 'barista jams,' local coffee tastings, industry conferences and competitions -- this will give you a flavor for what must be eventually accomplished and lay a foundation of experience from which you will benefit. Pick up a little piece of information from every source. After you have staffed the site and as prepare to launch the business is the best time to receive professional instruction for the entire team.
I've seen a number of people go off to some training center 6 months or a year ahead of a planned opening, only to forget the detail and nuance of the professional instruction that they have received when they are ready to apply that information. Even if well-timed, it is unreasonable to expect that one person can be introduced to a completely foreign concept and then effectively educate others with only 5 day's classroom training -- your experience from the many sources above will improve your ability to integrate the information learned in a formal training class and make you a better instructor for your staff.
Education is not a one-time vaccination; you can't be inoculated by watching a videotape, attending a class or even holding a single lecture for your first wave of employees. You can absorb valuable information from a variety of sources (including this very site). When you approach business with the mindset that training is a core part of your business culture, you'll find that there are opportunities to learn more and improve each day.
