What Kind Of Experience Required To Make Money With Articles?

First, you will need to know how to choose appropriate articles to make your sites successful. There are many types of article content, from free article content to article content that requires you pay dearly for it, each has its own advantages and disadvantages (though of course with high prices article content  is more likely you get a successful site in the end). 
Second, you will need to know how to choose keywords that can help you get good amount of traffic, without being too competitive to get on the first or second page of search engines. If you choose highly competitive keywords that are used by large or giant websites, chances are that you will never even come to those much needed to get up to the first two pages. 
Third, you will need to know how to optimize your sites for various search engines. Search Engine Optimization skills will enable you to get high rankings for your chosen niche keywords, which will help to get visitors and generate profit. 
Fourth, if you opt for a large website and you do intend to focus on a career in the internet marketing, then you need also to know how to market your web site to your audience through paid banner ads or text links. If you prefer small niche sites with 2-5 pages, then promoting this way will not be cost effective and will eat up more profits than it is worth.
If you can capture some of these skills and using them aggressively for several first smaller sites set up, or the first few months of a larger website, then you will eventually become an expert. Since you can learn first hand everything on your own, the only thing you need to do before you start your new career is to read up on how to get started (maybe buy one or two e-books on how to write good articles) and make sure that you have funds available to start a small site.