Hi I have an iPod classic 120gb I was wondering if someone could explain to me how I can put music videos, podcasts, and songs without using itunes.

Not 100% sure, but I don't think this is possible without another third-party app. Check out this article for more information:

6 Ways To Sync Your iPod To Computer Without iTunes

Thank you very much I did find a site, program called copytrans control which helped me immensely but thank you very much