This video provides guidance about how to record, edit, export, host and stream a podcast. There are many different ways to go about this, the video provides one way.
Some of the tools you may want to explore are:
Audacity is a free and open-source digital audio editor and recording application software, available for Windows, macOS, Linux, and other Unix-like operating systems
SoundCloud is an online audio distribution platform and music sharing website that enables its users to upload, promote, and share audio, as well as a digital signal processor enabling listeners to stream audio.
Tunes to Tube is a free website that will take an audio and image file and convert them to a video and post them on your YouTube channel. YouTube will then automatically caption your podcast.