To start with, you can apply as a virtual assistant for any clients around the world. All you have to do is to have a computer + internet connection (a headset of course) and you're up for the job. You can also try telemarketing jobs, customer service etc.
Where to find jobs? You can start your work-from-home career on any of these legit sites: Staff.com - best site to look into if you want a full time/part time job Fiverr - $5 per service, just post all your services on their site
convergys.com hires peoeple to work from home as customer service reps for other companies like Sprint and Directv - it's a real job, starts around $10 an hour. Need newer computer and decent internet connection. My wife did it for a year.