Welcome! There are a lot of moving parts and a lot of jargon, don’t worry about not getting it all at once. Getting Started and Indiewebify.me are supposed to be written with this in mind. If you find a part that doesn’t make sense or isn’t welcoming to new people, that would be very useful feedback. And feel free to join us in the IRC channel, there’s usually a few people around happy to talk and answer questions.
Welcome Clint! To add to what Kyle said, writing code is not the only way to contribute. Design mockups, pointing out troublesome areas, maybe some feature you’d like to have but is not covered/explained appropriately, are all good things to do. But, most importantly, owning your web identity is a great start, maybe also help friends/others to do the same… Indieweb is not just for coders.