Making video requires shooting with a camera, doing animation or screen capture.
To make camera videos, I suggest using iPhone or iPad and I teach that at
Instant Video Blogger click here
You can shoot video with a camera and there so many that are awesome that are DSLR or the GoPro which they sell at BH Photo Video
Popular editing programs on the computer are Windows Movie Maker which comes free with all PCs.
Sony Vegas which can be bought online at Sony Media Software
I made tutorials about the basics that are still good, but not for current version, but here they are and you are welcome to watch for free
Adobe Premier, iMovie for Mac, Final Cut for Mac and just search Google for video editors
Camtasia for PC and Mac is available at TechSmith.com This is the premier screen software for making slide shows and more.
Some cheap video production software I use on my PC or Mac is
Easy Sketch Pro
There are others, but this is more than you would ever need to make video podcast content.