The Occupational Information Network (O*NET) is a career exploration tool that is provided by the US Department of Labor.  It allows you to search for careers using a variety of options.  You can search for careers by industry or job type.  You can also look for careers by skills, interests, works style, and several other categories.  Start exploring 

Do you want information about a specific career?  The Occupational Outlook Handbook has information about what people in each career do, how you can enter that career and what the job outlook and pay range is.
Search their alphabetical list of careers to find the ones you are interested in.