I still reference this to help me optimise my podcasting processes. I have sent countless people to this resource so I thought I'd post it up here and give it a short link so I can reference it in the future when I'm out and about at physical events.
It's Pat Flynn's guide to starting a podcast and its really, really helpful.
My Complete, Step-By-Step Podcasting Tutorial to help you Learn How to Start a Podcast like a Pro. 6 High-Quality Videos and Everything Else You Need!
Update: My friends at DJ City just published this epic guide to starting a podcast which may be more up to date.