We've offered tuning classes in the past with sever people interested, but with the economy being what it is nobody could really come up with the money to commit.
With that said, we have basically set the training classes up so that anyone who wants to take a class can schedule it. We can either use our truck for testing or we can use yours. We'll provide the dyno and we'll work with you one-on-one to teach you what you need to know in regards to tuning the 7.3L. The nice thing is that most of the 7.3L basics apply to the 6.0L as well, so when you're ready to make the switch then all you'll need is a new set of definitions and some base file and you're ready to go.
Like many have said, the forums are a great resource for tuning tips. However, if anyone is seriously interested, give us a shout and we'll be happy to put a session together.
Take care.