NPR offers a contest each year with prizes ranging from $500 to $5000 scholarships, plus a ton of publicity. It is a great way to kick off a career in podcasting. Submissions are made during December, January, and February, with the awards being announced at the end of March each year.
There are a few hoops to jump through and requirements for submission, but nothing that is too challenging to overcome. No matter what time of year you discover this possibility, you will have plenty of time to prepare. Stop by the library if you need help with anything.