How about blogging about things. It is a great way to market yourself. You can post your blog entries on LinkedIn, Google+, Twitter, Facebook etc. Use relevant hash tags.
I'll second this. When I'm looking at applications, especially at someone without a lot of dev experience, just having a little blog explaining your side projects, even if they aren't super original/complex goes a long way. It lets me see that you're proactive, an independent learner, you can communicate, potentially your sense of humor. A simple web site and/or blog can go a long way.