I am 24 years old i will be receiving 25,000$ on march 9, 2011, what is the best choice for me to do with it?

i have 3000$ loan to pay off when i receive that money i went to tech school for 9 months for diesel mech and chie fab but im not sure if that is the career for me. i am just looking for the best choice for me when i receive i ask people and most say stick it in a high interist rate cd and some say stick it in stocks but i have no idea about that... WHAT TO DO? your comments will be greatly appreciated.