Before you start recording, you'll need to plan out what you're going to say. It's worth writing a script, even if you just outline areas you want to talk about - your memory is likely to go blank otherwise. Now find a quiet room and a suitable microphone, such as the one in the kit above.
Next you need to get hold of a suitable audio editing program - in this walkthrough we're using Audacity, a free, reliable and simple application. Download it from here,, then run the setup wizard and install the program. Once this process is completed, start Audacity and you're ready to go.
Hit the red record button and start speaking into the microphone, talking slowly and clearly. Hit stop (the yellow button) when you've finished. Audacity has created an audio track of your speech, with sounds displayed as blue waveforms. Press the green play button to hear the recording.
Next, we'll edit out unwanted periods of silence. These are indicated by the flat areas. Select the default editing tool (indicated by a capital I) and click and drag across the area you wish to remove, then press delete. Keep hitting play to hear what your track sounds like as you make edits. Ctrl, Z will undo mistakes.
Each time you hit Record, Audacity creates a track. This is ideal for replacing areas you're unhappy with. Start recording again and repeat the unwanted section. Select this area in the new track and press Ctrl, C to copy it. Then select the unwanted content in the first track and hit Ctrl, V to paste the new material over the top.
You can use the multitrack facilities to add a musical backing - either record a track of yourself if you're feeling musical, or simply hit Project, Import Audio... to use existing files. Be aware of copyright if you plan to produce a commercial podcast. You'll have to convert the music file into a non-proprietary format first.