Do things that show initiative
IMHO candidates who can talk knowledgeably about their subject and show a willingness to learn are better than those who have the qualifications and no passion for the job. You have taught yourself some useful stuff so use that to demonstrate your competence in an interview.
Look at where you want to work and figure out what you need to get a job there. Different company's will require different levels of qualification.
Look at MOOC's (openlearning.com, coursera.org and so on) and see what you can find in the field of computing. Read books to extend your knowledge. Build a network at home (not just a Windows one, either).
I'd be less worried about getting courses under your belt and more about working somewhere that you can claim real life experience.
Biting the hand that feeds IT
