No real tips except to work on getting the best sound quality possible. I listen to many podcasts but if the sound is particularly bad I'll drop it quickly.
I started podcasting in 2005, when it was fairly new. (
http://www.davehitt.com/podcasts/index.html) Way back then you could get away with mediocre or even bad sound if the content was good. No longer. There are tens of thousands of podcasts out there, and at least a dozen covering the same subject as yours. You've got
one chance to grab the listeners attention, and if your sound is bad they'll unsubscribe your show in a heartbeat and move on to the next one.
I agree with the oft repeated suggestions that you record your first two or three podcasts as carefully as you can, then delete them without releasing them. Digital audio is as much art as science. Getting it to sound good is like getting a photo to look good in Photoshop – no matter how many tutorials you study, you have to put in the time and crank out some crappy work before you get good at it.