At at lot of the WordCamps and WordPress meetups I attend, I’m asked the same question: How do you go about becoming a WordPress professional? The question is normally asked by one of two types of people: those who’ve been using WordPress in their spare time for a while and want to make a living from it, and those who’ve been making a living in a similar field (such as design or front end development) and want to cross over to working with WordPress.
Already consider one as it. Good reminder and refresher.
Source: How to Become a WordPress Professional – and Tips Based on Experience – WPMU DEV