Hi there. Sorry I can't provide you with a good online resource, but my suggestion would be to find a good teacher local to you. I found meditation via yoga and it has had a profound effect on my mental state - how I deal with crisis, day-to-day tasks and dealing with people. I'm more focused and calm. I started my first business over 10 years ago and quickly (as I worked near the kitchen) ballooned to look like the Goodyear blimp. It took me a few years to recognise that I needed a healthy diet and my girlfriend introduced me to yoga. It was a revelation and, although I'm in danger of getting all evangelical on you, the combination of yoga, a healthy diet and meditation transformed me so that I can run my business more effectively. I would never try an online resource, book or audio book first though. Its much better to experience it with a good trainer until you can do it yourself. Good luck