For new investors, the key to building a portfolio is to focus first on core stocks. These are companies that are easy to understand, have a good chance to perform well over the long term, and won't keep you up at night. At Motley Fool Stock Advisor, we maintain a list of 10 core stocks to build on, including our favorite organic grocer. 

Jason Moser has no position in any stocks mentioned. The Motley Fool recommends Whole Foods Market. The Motley Fool owns shares of Whole Foods Market. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.