You may get different information from all of these websites for the same career which would be interesting. You will definitely get all the information for the body of your speech by looking at all three.
Career One Stop Type in your chosen career in the occupation profile window.
California Career Zone You do not need to create an account to get information. Roll over the Explore pull down menu at the top and click on All Occupations under Occupations. Scroll down to the career of your choice.
US Bureau of Labor Statistics You can search by occupation group on the left or type in a career in the window at the top. Or browse careers by pay and growth in the future.