A "podcast" is a digital audio file made available on the Internet for downloading and listening. Podcasts typically contain information or thoughts on a topic of potential interest to listeners.
You will need the following to record your podcast:
1) A recording device. You may use one of the following:
a) The audio recorder on your smart phone, OR
b) A computer with a microphone and recording software. (See Audacity software link on this page.)
2) Optional but recommended: A set of headphones for recording and mixing (editing) the audio file.
2) A quiet room with no background noise.
3) A well-researched, well-written script.
What does it mean to mix audio?
"Mixing is the process of editing and arranging audio clips in a way that sounds seamless and natural to a listener. After you and your team record sounds from interviews, events or other sources, you'll need to arrange them in a sound-editing software, like Audacity, which you can download online free of charge." (Quote from https://www.npr.org/2018/11/15/662070097/starting-your-podcast-a-guide-for-students)