Did you teach yourself most of what you know before going to college? If so, up play that factor. Being able to teach yourself and answer your own questions goes loooong way. What have you been working on in the past 14 months?
Companies want to know how you can provide value to them. Be proud of the work you have done and talk about a interesting problem you solved. Giving clear cut answers is always good. Be confident and passionate, but but not cocky or ignorant. Try to avoid the words "I don't know" . If you don't, then explain how you would find a answer to the question. Always follow up the interview with a thank you letter, making it personal is key.
Go to a company hosted meetup event, mingle with the employees and if your interested let them know.
Look for events that require participation from those attending and help others when they are stuck.
Stick out from the crowd and you'll be good.