1)I used audacity and podcast people as host for my podcast.
2) Podcast is a system that people use to publish video and audio recardings.It is open for a free trial for 14 days and then you have to pay to subscribe.
3) I had to buy a microphone to record using audacity. I added two tracks to my project. A voice track of me talking and a sound track of my favorite singer.I found audacity to be user friendly. I used podcast people as a host. I found out that it is easy once you know where to go. I had helpfrom Lana. It would be good for a person who likes to hear themselves talk. Just kidding. It would be good for sermons or missonaries.
The only tips that I can give you is to take your time and ask questions if you don't understand.