Reddit mentions of How to Print T-Shirts for Fun and Profit

Yeah, it's a craft full of a thousand details to learn and master much like any other craft. That's why I suggested you grab one of the simple "starter kits" so you can start learning the very basics of the process without spending a bunch of cash. They are hobby level and not producing professional product but great to learn with. Even if you plan on hiring printers as an owner you should at least know the processes involved.

It's got a stupid ass name, but many many people got started with this book, I have a copy myself and even after going pro I have found useful info in there. And/or you can get starter kits (aka hobby kits) from DIY, Ryonet, and Speedball.

Look up your local community college and occupational training programs, extended learning, etc. I got my start in school with an excellent job training program and got me my first apprentice gig. Many of these programs and classes are free or very inexpensive.

Also, behold the value of video! Catspit and Ryonet have a bunch of great videos. I've found these two resources to be of excellent quality compared to many other videos of, cough, questionable value.

One thing I need to also mention is that learning by doing is the only way to really grok this but it is fucking annoying and frustrating sometimes not to mention that it can get expensive re-doing parts of the process over and over to get a good finish product. All printers have at least one story about that "one shirt" that just didn't want to print right.

Finally, don't be afraid to ask specific questions in the subreddit. There are a bunch of really smart printers that drop in here. I've learned a ton about stuff that I don't normally do simply from taking a few minutes every day to specifically check the threads here. There's also stuff like the t-shirt board and other forums but that's not something I have a lot of time to devote to browsing so don't know where to suggest.

Wall of text =) Good luck!