I also learn best when I have a specific goal or problem that I want to solve. Just start selling your creations through existing outlets. It sounds like Etsy.com might be the best fit for you. When you start selling you'll gain important experience, skills, and knowledge along the way. This will including
1) learning how to effectively present your products (how to write good descriptions, and how to take good photos, etc.),
2) how to interact with customers (how to package your products well, how to write thank you emails to clients, etc.)
3) How to advertise your products by posting about them on blogs, wearing them to events, giving them to influential people, etc.

There are a lot of other skills you'll learn along the way too that you'll be surprised by, the ones above are just things I thought of off the top of my head. There's another thing that will be extremely helpful: a 'mentor', someone who has a lot of experience in doing what you want to do. You'll find that people that are truly passionate about their work are also very passionate about helping others achieve what they've achieved, as long as you show the same passion. While finding a 'mentor' will help a lot, it's not something that you should try to do before you start selling and learning as I described above. Like I said, you have to be able to show that you have passion and commitment to be able to really start getting help from others. But as you do this, you can start reaching out to people you admire in the business, through Twitter, or Etsy, or LinkedIn, or their personal email on their website, or maybe you'll meet someone personally (like at a meetup through Meetup.com or something).

Best of luck, and if you want any further advice send me a message and I'll give you a code for a free call,

all the best,

Lee