Ashtanga Yoga

I'm a newcomer. How do I start practicing Ashtanga Yoga?

The best way to start is by finding a suitably qualified practitioner and following their advice.
That said it's common to find yourself with many questions in the early stages of learning the Ashtanga Yoga method.
Luckily there are many resources available on the internet to help with this process. The following is a small list of
those that come to mind. However there are many others just a Query away on your favoured Search Engine.