If you dig around online you'll find a lot of conflicting information. Many say RAW is the only serious way to shoot. Others say RAW is for amateurs who can't get the exposure right in-camera. I believe you should shoot JPG until you develop an intuitive understanding of what its limitations are. Then, when you do switch to RAW, you'll have an appreciation of what its advantages are, as well as the other trade offs involved, and you will be able to make an informed decision on which to shoot on a case by case basis.